Finding the Fourth Proportional to 172,436,941.80, 258,655,412.70 and 155,430,829.80
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Solution
The fourth proportional to 172,436,941.80, 258,655,412.70 and 155,430,829.80 is: 233,146,244.70
Step by Step Solution
- Step 1: Write the proportion equation
172,436,941.80 : 258,655,412.70 = 155,430,829.80 : x - Step 2: Convert to fraction form
172,436,941.80/258,655,412.70 = 155,430,829.80/x - Step 3: Cross multiply
172,436,941.80x = 258,655,412.70 × 155,430,829.80 - Step 4: Simplify right side
172,436,941.80x = 40,203,025,428,222,456 - Step 5: Solve for x
x = 40,203,025,428,222,456/172,436,941.80 - Step 6: Final answer
x = 233,146,244.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.