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Finding the Fourth Proportional to 521,424.07, 781,939.26 and 240,744.49

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Solution

The fourth proportional to 521,424.07, 781,939.26 and 240,744.49 is: 361,025.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,424.07 : 781,939.26 = 240,744.49 : x
  2. Step 2: Convert to fraction form
    521,424.07/781,939.26 = 240,744.49/x
  3. Step 3: Cross multiply
    521,424.07x = 781,939.26 × 240,744.49
  4. Step 4: Simplify right side
    521,424.07x = 188,247,568,359.68
  5. Step 5: Solve for x
    x = 188,247,568,359.68/521,424.07
  6. Step 6: Final answer
    x = 361,025.85

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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.