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Finding the Fourth Proportional to 269,760.30, 404,154.45 and 129,209.10

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Solution

The fourth proportional to 269,760.30, 404,154.45 and 129,209.10 is: 193,580.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,760.30 : 404,154.45 = 129,209.10 : x
  2. Step 2: Convert to fraction form
    269,760.30/404,154.45 = 129,209.10/x
  3. Step 3: Cross multiply
    269,760.30x = 404,154.45 × 129,209.10
  4. Step 4: Simplify right side
    269,760.30x = 52,220,432,745.50
  5. Step 5: Solve for x
    x = 52,220,432,745.50/269,760.30
  6. Step 6: Final answer
    x = 193,580.87

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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.