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Finding the Fourth Proportional to 251,383.88, 376,995.68 and 82,872.80

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Solution

The fourth proportional to 251,383.88, 376,995.68 and 82,872.80 is: 124,282.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,383.88 : 376,995.68 = 82,872.80 : x
  2. Step 2: Convert to fraction form
    251,383.88/376,995.68 = 82,872.80/x
  3. Step 3: Cross multiply
    251,383.88x = 376,995.68 × 82,872.80
  4. Step 4: Simplify right side
    251,383.88x = 31,242,687,589.50
  5. Step 5: Solve for x
    x = 31,242,687,589.50/251,383.88
  6. Step 6: Final answer
    x = 124,282.78

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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.