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Finding the Fourth Proportional to 251,387.88, 377,001.68 and 82,876.80

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Solution

The fourth proportional to 251,387.88, 377,001.68 and 82,876.80 is: 124,288.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,387.88 : 377,001.68 = 82,876.80 : x
  2. Step 2: Convert to fraction form
    251,387.88/377,001.68 = 82,876.80/x
  3. Step 3: Cross multiply
    251,387.88x = 377,001.68 × 82,876.80
  4. Step 4: Simplify right side
    251,387.88x = 31,244,692,833.02
  5. Step 5: Solve for x
    x = 31,244,692,833.02/251,387.88
  6. Step 6: Final answer
    x = 124,288.78

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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.