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Finding the Fourth Proportional to 269,796.40, 404,939.40 and 136,769.20

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Solution

The fourth proportional to 269,796.40, 404,939.40 and 136,769.20 is: 205,277.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,796.40 : 404,939.40 = 136,769.20 : x
  2. Step 2: Convert to fraction form
    269,796.40/404,939.40 = 136,769.20/x
  3. Step 3: Cross multiply
    269,796.40x = 404,939.40 × 136,769.20
  4. Step 4: Simplify right side
    269,796.40x = 55,383,237,786.48
  5. Step 5: Solve for x
    x = 55,383,237,786.48/269,796.40
  6. Step 6: Final answer
    x = 205,277.90

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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.