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Finding the Fourth Proportional to 250,379.91, 375,593.15 and 81,901.33

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Solution

The fourth proportional to 250,379.91, 375,593.15 and 81,901.33 is: 122,859.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,379.91 : 375,593.15 = 81,901.33 : x
  2. Step 2: Convert to fraction form
    250,379.91/375,593.15 = 81,901.33/x
  3. Step 3: Cross multiply
    250,379.91x = 375,593.15 × 81,901.33
  4. Step 4: Simplify right side
    250,379.91x = 30,761,577,789.66
  5. Step 5: Solve for x
    x = 30,761,577,789.66/250,379.91
  6. Step 6: Final answer
    x = 122,859.61

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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.