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Finding the Fourth Proportional to 269,685.87, 404,777.28 and 136,660.38

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Solution

The fourth proportional to 269,685.87, 404,777.28 and 136,660.38 is: 205,116.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,685.87 : 404,777.28 = 136,660.38 : x
  2. Step 2: Convert to fraction form
    269,685.87/404,777.28 = 136,660.38/x
  3. Step 3: Cross multiply
    269,685.87x = 404,777.28 × 136,660.38
  4. Step 4: Simplify right side
    269,685.87x = 55,317,016,900.17
  5. Step 5: Solve for x
    x = 55,317,016,900.17/269,685.87
  6. Step 6: Final answer
    x = 205,116.48

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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.