Melbourne is about 242 times smaller than Tanzania.

Tanzania is approximately 947,300 sq km, while Melbourne (the 27 councils of metropolitan Melbourne, without the Yarra Ranges, Cardinia, Mornington Peninsula and Nillumbik) is approximately 3,915 sq km, making Melbourne 0.41% the size of Tanzania.
Tip: This to-scale comparison of Tanzania vs. Melbourne uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.