Resuming the day on 106-0 with Malan (41*) and Isma-eel Gafieldien (60*) looking settled at the crease, Western Province picked up two early wickets in the morning session.
Malan then found willing partners in brother Janneman (29) and all-rounder Ferisco Adams (50*), before the captains shook hands at tea.
Kyle Simmonds (3-81) was the standout bowler for WP in the final innings.
In Centurion, there was no play possible due to rain, with the Northerns Titans and KZN Dolphins settling for a draw.
4-Day Series Day 4 scores:
Division One:
Boland Rocks drew with Western Province
Rocks: 267 & 269-4 after 119 overs; P Malan 117* (349), F Adams 50* (97); K Simmonds 3-81, W Parnell 1-37
WP: 444
Northerns Titans drew with KZN Dolphins
Titans: 424 & 126-1
Dolphins: 433
Central Gauteng Lions beat EP Warriors by an innings and 20 runs
Warriors: 96 & 54
Lions: 170
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Free State Knights beat North West Dragons by 10 wickets
Knights: 418 & 17-0
Dragons: 237 & 197 (f/o)
Division Two:
Mpumalanga Rhinos drew with South Western Districts
Rhinos: 311 & 104
SWD: 209 & 166-2 after 26 overs; B Capell 72 (64), Y Valli 59 (73); B Xenxe 1-60
Northern Cape Heat beat KZN Inland Tuskers by 130 runs
Heat: 333 & 301-9 dec after 104 overs; E Kemm 121 (235), V Mahlangu 53* (182); M Erlank 4-61, K Dudgeon 3-85
Tuskers: 332 & 182 after 48 overs; L Schlemmer 42 (65), A Mogakane 32 (58); A Swanepoel 6-42, B Swanepoel 1-27
Eastern Storm drew with Limpopo Impala
Storm: 441
Impala: 261 & 207-3 (f/o) after 64 overs; L Kaestner 74 (184), M Nofal 62* (103); K Gumede 1-25, C August 1-26
