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Finding the Fourth Proportional to 425,462.26, 587,130.39 and 231,871.75

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Solution

The fourth proportional to 425,462.26, 587,130.39 and 231,871.75 is: 319,978.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,462.26 : 587,130.39 = 231,871.75 : x
  2. Step 2: Convert to fraction form
    425,462.26/587,130.39 = 231,871.75/x
  3. Step 3: Cross multiply
    425,462.26x = 587,130.39 × 231,871.75
  4. Step 4: Simplify right side
    425,462.26x = 136,138,951,007.48
  5. Step 5: Solve for x
    x = 136,138,951,007.48/425,462.26
  6. Step 6: Final answer
    x = 319,978.91

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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.