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Finding the Fourth Proportional to 269,418.80, 404,176.80 and 135,963.20

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Solution

The fourth proportional to 269,418.80, 404,176.80 and 135,963.20 is: 203,969.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,418.80 : 404,176.80 = 135,963.20 : x
  2. Step 2: Convert to fraction form
    269,418.80/404,176.80 = 135,963.20/x
  3. Step 3: Cross multiply
    269,418.80x = 404,176.80 × 135,963.20
  4. Step 4: Simplify right side
    269,418.80x = 54,953,171,093.76
  5. Step 5: Solve for x
    x = 54,953,171,093.76/269,418.80
  6. Step 6: Final answer
    x = 203,969.33

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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.