Finding the Fourth Proportional to 431,487.96, 647,358.18 and 221,272.92
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Solution
The fourth proportional to 431,487.96, 647,358.18 and 221,272.92 is: 331,974.12
Step by Step Solution
- Step 1: Write the proportion equation
431,487.96 : 647,358.18 = 221,272.92 : x - Step 2: Convert to fraction form
431,487.96/647,358.18 = 221,272.92/x - Step 3: Cross multiply
431,487.96x = 647,358.18 × 221,272.92 - Step 4: Simplify right side
431,487.96x = 143,242,834,774.49 - Step 5: Solve for x
x = 143,242,834,774.49/431,487.96 - Step 6: Final answer
x = 331,974.12
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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.