Home / 521,246.20-781,776-156,433.48

Finding the Fourth Proportional to 521,246.20, 781,776 and 156,433.48

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Solution

The fourth proportional to 521,246.20, 781,776 and 156,433.48 is: 234,622.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,246.20 : 781,776 = 156,433.48 : x
  2. Step 2: Convert to fraction form
    521,246.20/781,776 = 156,433.48/x
  3. Step 3: Cross multiply
    521,246.20x = 781,776 × 156,433.48
  4. Step 4: Simplify right side
    521,246.20x = 122,295,940,260.48
  5. Step 5: Solve for x
    x = 122,295,940,260.48/521,246.20
  6. Step 6: Final answer
    x = 234,622.22

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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.