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Finding the Fourth Proportional to 423,665.75, 635,498.04 and 108,122.65

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Solution

The fourth proportional to 423,665.75, 635,498.04 and 108,122.65 is: 162,183.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,665.75 : 635,498.04 = 108,122.65 : x
  2. Step 2: Convert to fraction form
    423,665.75/635,498.04 = 108,122.65/x
  3. Step 3: Cross multiply
    423,665.75x = 635,498.04 × 108,122.65
  4. Step 4: Simplify right side
    423,665.75x = 68,711,732,154.61
  5. Step 5: Solve for x
    x = 68,711,732,154.61/423,665.75
  6. Step 6: Final answer
    x = 162,183.83

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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.