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Finding the Fourth Proportional to 251,279.20, 376,918.80 and 82,799.20

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Solution

The fourth proportional to 251,279.20, 376,918.80 and 82,799.20 is: 124,198.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,279.20 : 376,918.80 = 82,799.20 : x
  2. Step 2: Convert to fraction form
    251,279.20/376,918.80 = 82,799.20/x
  3. Step 3: Cross multiply
    251,279.20x = 376,918.80 × 82,799.20
  4. Step 4: Simplify right side
    251,279.20x = 31,208,575,104.96
  5. Step 5: Solve for x
    x = 31,208,575,104.96/251,279.20
  6. Step 6: Final answer
    x = 124,198.80

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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.