Finding the Fourth Proportional to 218,490,988.30, 327,862,453.65 and 82,274,130.70
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Solution
The fourth proportional to 218,490,988.30, 327,862,453.65 and 82,274,130.70 is: 123,458,631.28
Step by Step Solution
- Step 1: Write the proportion equation
218,490,988.30 : 327,862,453.65 = 82,274,130.70 : x - Step 2: Convert to fraction form
218,490,988.30/327,862,453.65 = 82,274,130.70/x - Step 3: Cross multiply
218,490,988.30x = 327,862,453.65 × 82,274,130.70 - Step 4: Simplify right side
218,490,988.30x = 26,974,598,363,222,792 - Step 5: Solve for x
x = 26,974,598,363,222,792/218,490,988.30 - Step 6: Final answer
x = 123,458,631.28
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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.