Home / 269,128.80-403,691.17-69,432.21

Finding the Fourth Proportional to 269,128.80, 403,691.17 and 69,432.21

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Solution

The fourth proportional to 269,128.80, 403,691.17 and 69,432.21 is: 104,147.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,128.80 : 403,691.17 = 69,432.21 : x
  2. Step 2: Convert to fraction form
    269,128.80/403,691.17 = 69,432.21/x
  3. Step 3: Cross multiply
    269,128.80x = 403,691.17 × 69,432.21
  4. Step 4: Simplify right side
    269,128.80x = 28,029,167,898.55
  5. Step 5: Solve for x
    x = 28,029,167,898.55/269,128.80
  6. Step 6: Final answer
    x = 104,147.79

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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.