Home / 347,789.60-521,857.20-137,434.40

Finding the Fourth Proportional to 347,789.60, 521,857.20 and 137,434.40

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Solution

The fourth proportional to 347,789.60, 521,857.20 and 137,434.40 is: 206,219.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,789.60 : 521,857.20 = 137,434.40 : x
  2. Step 2: Convert to fraction form
    347,789.60/521,857.20 = 137,434.40/x
  3. Step 3: Cross multiply
    347,789.60x = 521,857.20 × 137,434.40
  4. Step 4: Simplify right side
    347,789.60x = 71,721,131,167.68
  5. Step 5: Solve for x
    x = 71,721,131,167.68/347,789.60
  6. Step 6: Final answer
    x = 206,219.88

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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.