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Finding the Fourth Proportional to 269,721.20, 404,236.20 and 239,999.60

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Solution

The fourth proportional to 269,721.20, 404,236.20 and 239,999.60 is: 359,691.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,721.20 : 404,236.20 = 239,999.60 : x
  2. Step 2: Convert to fraction form
    269,721.20/404,236.20 = 239,999.60/x
  3. Step 3: Cross multiply
    269,721.20x = 404,236.20 × 239,999.60
  4. Step 4: Simplify right side
    269,721.20x = 97,016,526,305.52
  5. Step 5: Solve for x
    x = 97,016,526,305.52/269,721.20
  6. Step 6: Final answer
    x = 359,691.88

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1.5x scale

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.