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Finding the Fourth Proportional to 378,713.70, 567,305.10 and 236,121.30

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Solution

The fourth proportional to 378,713.70, 567,305.10 and 236,121.30 is: 353,704.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,713.70 : 567,305.10 = 236,121.30 : x
  2. Step 2: Convert to fraction form
    378,713.70/567,305.10 = 236,121.30/x
  3. Step 3: Cross multiply
    378,713.70x = 567,305.10 × 236,121.30
  4. Step 4: Simplify right side
    378,713.70x = 133,952,817,708.63
  5. Step 5: Solve for x
    x = 133,952,817,708.63/378,713.70
  6. Step 6: Final answer
    x = 353,704.71

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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.