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Finding the Fourth Proportional to 231,555, 319,545.90 and 125,571

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Solution

The fourth proportional to 231,555, 319,545.90 and 125,571 is: 173,287.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,555 : 319,545.90 = 125,571 : x
  2. Step 2: Convert to fraction form
    231,555/319,545.90 = 125,571/x
  3. Step 3: Cross multiply
    231,555x = 319,545.90 × 125,571
  4. Step 4: Simplify right side
    231,555x = 40,125,698,208.90
  5. Step 5: Solve for x
    x = 40,125,698,208.90/231,555
  6. Step 6: Final answer
    x = 173,287.98

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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.