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Finding the Fourth Proportional to 251,379.88, 376,989.68 and 82,868.80

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Solution

The fourth proportional to 251,379.88, 376,989.68 and 82,868.80 is: 124,276.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,379.88 : 376,989.68 = 82,868.80 : x
  2. Step 2: Convert to fraction form
    251,379.88/376,989.68 = 82,868.80/x
  3. Step 3: Cross multiply
    251,379.88x = 376,989.68 × 82,868.80
  4. Step 4: Simplify right side
    251,379.88x = 31,240,682,393.98
  5. Step 5: Solve for x
    x = 31,240,682,393.98/251,379.88
  6. Step 6: Final answer
    x = 124,276.78

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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.