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Finding the Fourth Proportional to 220,882.40, 331,323.60 and 115,687.70

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Solution

The fourth proportional to 220,882.40, 331,323.60 and 115,687.70 is: 173,531.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,882.40 : 331,323.60 = 115,687.70 : x
  2. Step 2: Convert to fraction form
    220,882.40/331,323.60 = 115,687.70/x
  3. Step 3: Cross multiply
    220,882.40x = 331,323.60 × 115,687.70
  4. Step 4: Simplify right side
    220,882.40x = 38,330,065,239.72
  5. Step 5: Solve for x
    x = 38,330,065,239.72/220,882.40
  6. Step 6: Final answer
    x = 173,531.55

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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.