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Finding the Fourth Proportional to 269,648.80, 404,732.40 and 136,679.20

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Solution

The fourth proportional to 269,648.80, 404,732.40 and 136,679.20 is: 205,150.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,648.80 : 404,732.40 = 136,679.20 : x
  2. Step 2: Convert to fraction form
    269,648.80/404,732.40 = 136,679.20/x
  3. Step 3: Cross multiply
    269,648.80x = 404,732.40 × 136,679.20
  4. Step 4: Simplify right side
    269,648.80x = 55,318,500,646.08
  5. Step 5: Solve for x
    x = 55,318,500,646.08/269,648.80
  6. Step 6: Final answer
    x = 205,150.18

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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.