Home / 521,540.57-782,188.10-142,371.16

Finding the Fourth Proportional to 521,540.57, 782,188.10 and 142,371.16

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Solution

The fourth proportional to 521,540.57, 782,188.10 and 142,371.16 is: 213,523.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,540.57 : 782,188.10 = 142,371.16 : x
  2. Step 2: Convert to fraction form
    521,540.57/782,188.10 = 142,371.16/x
  3. Step 3: Cross multiply
    521,540.57x = 782,188.10 × 142,371.16
  4. Step 4: Simplify right side
    521,540.57x = 111,361,025,535.65
  5. Step 5: Solve for x
    x = 111,361,025,535.65/521,540.57
  6. Step 6: Final answer
    x = 213,523.23

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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.