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Finding the Fourth Proportional to 378,308.15, 568,105.00 and 252,755.20

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Solution

The fourth proportional to 378,308.15, 568,105.00 and 252,755.20 is: 379,562.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,308.15 : 568,105.00 = 252,755.20 : x
  2. Step 2: Convert to fraction form
    378,308.15/568,105.00 = 252,755.20/x
  3. Step 3: Cross multiply
    378,308.15x = 568,105.00 × 252,755.20
  4. Step 4: Simplify right side
    378,308.15x = 143,591,490,843.85
  5. Step 5: Solve for x
    x = 143,591,490,843.85/378,308.15
  6. Step 6: Final answer
    x = 379,562.25

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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.