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Finding the Fourth Proportional to 225,865.31, 338,816.39 and 113,487.53

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Solution

The fourth proportional to 225,865.31, 338,816.39 and 113,487.53 is: 170,240.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,865.31 : 338,816.39 = 113,487.53 : x
  2. Step 2: Convert to fraction form
    225,865.31/338,816.39 = 113,487.53/x
  3. Step 3: Cross multiply
    225,865.31x = 338,816.39 × 113,487.53
  4. Step 4: Simplify right side
    225,865.31x = 38,451,432,963.10
  5. Step 5: Solve for x
    x = 38,451,432,963.10/225,865.31
  6. Step 6: Final answer
    x = 170,240.55

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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.