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Finding the Fourth Proportional to 345,337.70, 517,982.48 and 129,155.24

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Solution

The fourth proportional to 345,337.70, 517,982.48 and 129,155.24 is: 193,723.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,337.70 : 517,982.48 = 129,155.24 : x
  2. Step 2: Convert to fraction form
    345,337.70/517,982.48 = 129,155.24/x
  3. Step 3: Cross multiply
    345,337.70x = 517,982.48 × 129,155.24
  4. Step 4: Simplify right side
    345,337.70x = 66,900,152,653.71
  5. Step 5: Solve for x
    x = 66,900,152,653.71/345,337.70
  6. Step 6: Final answer
    x = 193,723.86

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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.