Finding the Fourth Proportional to 198,611,622.25, 274,121,984.26 and 131,512,230.60
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Solution
The fourth proportional to 198,611,622.25, 274,121,984.26 and 131,512,230.60 is: 181,512,004.17
Step by Step Solution
- Step 1: Write the proportion equation
198,611,622.25 : 274,121,984.26 = 131,512,230.60 : x - Step 2: Convert to fraction form
198,611,622.25/274,121,984.26 = 131,512,230.60/x - Step 3: Cross multiply
198,611,622.25x = 274,121,984.26 × 131,512,230.60 - Step 4: Simplify right side
198,611,622.25x = 36,050,393,607,210,432 - Step 5: Solve for x
x = 36,050,393,607,210,432/198,611,622.25 - Step 6: Final answer
x = 181,512,004.17
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.