Tanzania is about 5 times bigger than North Dakota.

North Dakota is approximately 178,647 sq km, while Tanzania is approximately 947,300 sq km, making Tanzania 430% larger than North Dakota. Meanwhile, the population of North Dakota is ~672,591 people (63.2 million more people live in Tanzania).
Tip: This to-scale comparison of North Dakota vs. Tanzania uses the Mercator projection, which distorts the size of regions near the poles.