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Finding the Fourth Proportional to 251,906.70, 377,909.88 and 71,993.74

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Solution

The fourth proportional to 251,906.70, 377,909.88 and 71,993.74 is: 108,004.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,906.70 : 377,909.88 = 71,993.74 : x
  2. Step 2: Convert to fraction form
    251,906.70/377,909.88 = 71,993.74/x
  3. Step 3: Cross multiply
    251,906.70x = 377,909.88 × 71,993.74
  4. Step 4: Simplify right side
    251,906.70x = 27,207,145,644.15
  5. Step 5: Solve for x
    x = 27,207,145,644.15/251,906.70
  6. Step 6: Final answer
    x = 108,004.85

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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.