Finding the Fourth Proportional to 431,569.70, 647,354.55 and 221,617.70
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Solution
The fourth proportional to 431,569.70, 647,354.55 and 221,617.70 is: 332,426.55
Step by Step Solution
- Step 1: Write the proportion equation
431,569.70 : 647,354.55 = 221,617.70 : x - Step 2: Convert to fraction form
431,569.70/647,354.55 = 221,617.70/x - Step 3: Cross multiply
431,569.70x = 647,354.55 × 221,617.70 - Step 4: Simplify right side
431,569.70x = 143,465,226,455.54 - Step 5: Solve for x
x = 143,465,226,455.54/431,569.70 - Step 6: Final answer
x = 332,426.55
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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.