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Finding the Fourth Proportional to 255,657.52, 383,542.52 and 75,728.96

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Solution

The fourth proportional to 255,657.52, 383,542.52 and 75,728.96 is: 113,610.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,657.52 : 383,542.52 = 75,728.96 : x
  2. Step 2: Convert to fraction form
    255,657.52/383,542.52 = 75,728.96/x
  3. Step 3: Cross multiply
    255,657.52x = 383,542.52 × 75,728.96
  4. Step 4: Simplify right side
    255,657.52x = 29,045,276,155.38
  5. Step 5: Solve for x
    x = 29,045,276,155.38/255,657.52
  6. Step 6: Final answer
    x = 113,610.10

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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.