Finding the Fourth Proportional to 647,974.17, 971,957.12 and 221,304.15
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Solution
The fourth proportional to 647,974.17, 971,957.12 and 221,304.15 is: 331,954.81
Step by Step Solution
- Step 1: Write the proportion equation
647,974.17 : 971,957.12 = 221,304.15 : x - Step 2: Convert to fraction form
647,974.17/971,957.12 = 221,304.15/x - Step 3: Cross multiply
647,974.17x = 971,957.12 × 221,304.15 - Step 4: Simplify right side
647,974.17x = 215,098,143,171.53 - Step 5: Solve for x
x = 215,098,143,171.53/647,974.17 - Step 6: Final answer
x = 331,954.81
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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.