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Finding the Fourth Proportional to 378,796.20, 568,224.52 and 126,067.56

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Solution

The fourth proportional to 378,796.20, 568,224.52 and 126,067.56 is: 189,111.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,796.20 : 568,224.52 = 126,067.56 : x
  2. Step 2: Convert to fraction form
    378,796.20/568,224.52 = 126,067.56/x
  3. Step 3: Cross multiply
    378,796.20x = 568,224.52 × 126,067.56
  4. Step 4: Simplify right side
    378,796.20x = 71,634,678,768.57
  5. Step 5: Solve for x
    x = 71,634,678,768.57/378,796.20
  6. Step 6: Final answer
    x = 189,111.40

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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.