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Finding the Fourth Proportional to 325,309.43, 487,625.85 and 125,766.87

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Solution

The fourth proportional to 325,309.43, 487,625.85 and 125,766.87 is: 188,519.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,309.43 : 487,625.85 = 125,766.87 : x
  2. Step 2: Convert to fraction form
    325,309.43/487,625.85 = 125,766.87/x
  3. Step 3: Cross multiply
    325,309.43x = 487,625.85 × 125,766.87
  4. Step 4: Simplify right side
    325,309.43x = 61,327,176,256.76
  5. Step 5: Solve for x
    x = 61,327,176,256.76/325,309.43
  6. Step 6: Final answer
    x = 188,519.52

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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.