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Finding the Fourth Proportional to 251,125.20, 376,687.80 and 139,150.80

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Solution

The fourth proportional to 251,125.20, 376,687.80 and 139,150.80 is: 208,726.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,125.20 : 376,687.80 = 139,150.80 : x
  2. Step 2: Convert to fraction form
    251,125.20/376,687.80 = 139,150.80/x
  3. Step 3: Cross multiply
    251,125.20x = 376,687.80 × 139,150.80
  4. Step 4: Simplify right side
    251,125.20x = 52,416,408,720.24
  5. Step 5: Solve for x
    x = 52,416,408,720.24/251,125.20
  6. Step 6: Final answer
    x = 208,726.20

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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.