North Dakota is about 5 times smaller than Tanzania.

Tanzania is approximately 947,300 sq km, while North Dakota is approximately 178,647 sq km, making North Dakota 18.86% the size of Tanzania. Meanwhile, the population of Tanzania is ~63.9 million people (63.2 million fewer people live in North Dakota).
Tip: This to-scale comparison of Tanzania vs. North Dakota uses the Mercator projection, which distorts the size of regions near the poles.