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Finding the Fourth Proportional to 424,592.20, 636,894.68 and 109,042.12

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Solution

The fourth proportional to 424,592.20, 636,894.68 and 109,042.12 is: 163,564.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,592.20 : 636,894.68 = 109,042.12 : x
  2. Step 2: Convert to fraction form
    424,592.20/636,894.68 = 109,042.12/x
  3. Step 3: Cross multiply
    424,592.20x = 636,894.68 × 109,042.12
  4. Step 4: Simplify right side
    424,592.20x = 69,448,346,123.92
  5. Step 5: Solve for x
    x = 69,448,346,123.92/424,592.20
  6. Step 6: Final answer
    x = 163,564.82

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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.