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Finding the Fourth Proportional to 199,375.85, 298,943.31 and 79,451.25

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Solution

The fourth proportional to 199,375.85, 298,943.31 and 79,451.25 is: 119,128.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,375.85 : 298,943.31 = 79,451.25 : x
  2. Step 2: Convert to fraction form
    199,375.85/298,943.31 = 79,451.25/x
  3. Step 3: Cross multiply
    199,375.85x = 298,943.31 × 79,451.25
  4. Step 4: Simplify right side
    199,375.85x = 23,751,419,658.64
  5. Step 5: Solve for x
    x = 23,751,419,658.64/199,375.85
  6. Step 6: Final answer
    x = 119,128.87

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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.