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Finding the Fourth Proportional to 255,781.31, 383,517.42 and 101,930.97

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Solution

The fourth proportional to 255,781.31, 383,517.42 and 101,930.97 is: 152,834.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,781.31 : 383,517.42 = 101,930.97 : x
  2. Step 2: Convert to fraction form
    255,781.31/383,517.42 = 101,930.97/x
  3. Step 3: Cross multiply
    255,781.31x = 383,517.42 × 101,930.97
  4. Step 4: Simplify right side
    255,781.31x = 39,092,302,632.50
  5. Step 5: Solve for x
    x = 39,092,302,632.50/255,781.31
  6. Step 6: Final answer
    x = 152,834.87

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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.