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Finding the Fourth Proportional to 269,686.80, 404,584.20 and 80,146.80

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Solution

The fourth proportional to 269,686.80, 404,584.20 and 80,146.80 is: 120,236.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,686.80 : 404,584.20 = 80,146.80 : x
  2. Step 2: Convert to fraction form
    269,686.80/404,584.20 = 80,146.80/x
  3. Step 3: Cross multiply
    269,686.80x = 404,584.20 × 80,146.80
  4. Step 4: Simplify right side
    269,686.80x = 32,426,128,960.56
  5. Step 5: Solve for x
    x = 32,426,128,960.56/269,686.80
  6. Step 6: Final answer
    x = 120,236.25

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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.