Home / 521,025.20-781,246.20-221,454.80

Finding the Fourth Proportional to 521,025.20, 781,246.20 and 221,454.80

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Solution

The fourth proportional to 521,025.20, 781,246.20 and 221,454.80 is: 332,058.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,025.20 : 781,246.20 = 221,454.80 : x
  2. Step 2: Convert to fraction form
    521,025.20/781,246.20 = 221,454.80/x
  3. Step 3: Cross multiply
    521,025.20x = 781,246.20 × 221,454.80
  4. Step 4: Simplify right side
    521,025.20x = 173,010,720,971.76
  5. Step 5: Solve for x
    x = 173,010,720,971.76/521,025.20
  6. Step 6: Final answer
    x = 332,058.26

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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.