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Finding the Fourth Proportional to 412,879.62, 619,170.66 and 142,934.43

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Solution

The fourth proportional to 412,879.62, 619,170.66 and 142,934.43 is: 214,350.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,879.62 : 619,170.66 = 142,934.43 : x
  2. Step 2: Convert to fraction form
    412,879.62/619,170.66 = 142,934.43/x
  3. Step 3: Cross multiply
    412,879.62x = 619,170.66 × 142,934.43
  4. Step 4: Simplify right side
    412,879.62x = 88,500,805,359.82
  5. Step 5: Solve for x
    x = 88,500,805,359.82/412,879.62
  6. Step 6: Final answer
    x = 214,350.14

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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.