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Finding the Fourth Proportional to 439,257.64, 658,897.28 and 123,712.44

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Solution

The fourth proportional to 439,257.64, 658,897.28 and 123,712.44 is: 185,571.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,257.64 : 658,897.28 = 123,712.44 : x
  2. Step 2: Convert to fraction form
    439,257.64/658,897.28 = 123,712.44/x
  3. Step 3: Cross multiply
    439,257.64x = 658,897.28 × 123,712.44
  4. Step 4: Simplify right side
    439,257.64x = 81,513,790,218.16
  5. Step 5: Solve for x
    x = 81,513,790,218.16/439,257.64
  6. Step 6: Final answer
    x = 185,571.71

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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.