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Finding the Fourth Proportional to 425,491.90, 587,171.22 and 231,901.36

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Solution

The fourth proportional to 425,491.90, 587,171.22 and 231,901.36 is: 320,019.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,491.90 : 587,171.22 = 231,901.36 : x
  2. Step 2: Convert to fraction form
    425,491.90/587,171.22 = 231,901.36/x
  3. Step 3: Cross multiply
    425,491.90x = 587,171.22 × 231,901.36
  4. Step 4: Simplify right side
    425,491.90x = 136,165,804,470.86
  5. Step 5: Solve for x
    x = 136,165,804,470.86/425,491.90
  6. Step 6: Final answer
    x = 320,019.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.