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Finding the Fourth Proportional to 252,391.62, 378,505.46 and 83,866.68

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Solution

The fourth proportional to 252,391.62, 378,505.46 and 83,866.68 is: 125,772.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,391.62 : 378,505.46 = 83,866.68 : x
  2. Step 2: Convert to fraction form
    252,391.62/378,505.46 = 83,866.68/x
  3. Step 3: Cross multiply
    252,391.62x = 378,505.46 × 83,866.68
  4. Step 4: Simplify right side
    252,391.62x = 31,743,995,872.74
  5. Step 5: Solve for x
    x = 31,743,995,872.74/252,391.62
  6. Step 6: Final answer
    x = 125,772.78

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1.5x scale

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.