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Finding the Fourth Proportional to 255,902.80, 384,046.20 and 131,179.60

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Solution

The fourth proportional to 255,902.80, 384,046.20 and 131,179.60 is: 196,867.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,902.80 : 384,046.20 = 131,179.60 : x
  2. Step 2: Convert to fraction form
    255,902.80/384,046.20 = 131,179.60/x
  3. Step 3: Cross multiply
    255,902.80x = 384,046.20 × 131,179.60
  4. Step 4: Simplify right side
    255,902.80x = 50,379,026,897.52
  5. Step 5: Solve for x
    x = 50,379,026,897.52/255,902.80
  6. Step 6: Final answer
    x = 196,867.82

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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.