Home / 347,787.60-521,854.20-137,432.40

Finding the Fourth Proportional to 347,787.60, 521,854.20 and 137,432.40

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Solution

The fourth proportional to 347,787.60, 521,854.20 and 137,432.40 is: 206,216.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,787.60 : 521,854.20 = 137,432.40 : x
  2. Step 2: Convert to fraction form
    347,787.60/521,854.20 = 137,432.40/x
  3. Step 3: Cross multiply
    347,787.60x = 521,854.20 × 137,432.40
  4. Step 4: Simplify right side
    347,787.60x = 71,719,675,156.08
  5. Step 5: Solve for x
    x = 71,719,675,156.08/347,787.60
  6. Step 6: Final answer
    x = 206,216.88

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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.