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Finding the Fourth Proportional to 221,385.53, 332,042.65 and 63,578.09

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Solution

The fourth proportional to 221,385.53, 332,042.65 and 63,578.09 is: 95,356.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,385.53 : 332,042.65 = 63,578.09 : x
  2. Step 2: Convert to fraction form
    221,385.53/332,042.65 = 63,578.09/x
  3. Step 3: Cross multiply
    221,385.53x = 332,042.65 × 63,578.09
  4. Step 4: Simplify right side
    221,385.53x = 21,110,635,666.38
  5. Step 5: Solve for x
    x = 21,110,635,666.38/221,385.53
  6. Step 6: Final answer
    x = 95,356.89

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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.