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Finding the Fourth Proportional to 250,278.86, 375,418.13 and 100,519.09

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Solution

The fourth proportional to 250,278.86, 375,418.13 and 100,519.09 is: 150,778.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,278.86 : 375,418.13 = 100,519.09 : x
  2. Step 2: Convert to fraction form
    250,278.86/375,418.13 = 100,519.09/x
  3. Step 3: Cross multiply
    250,278.86x = 375,418.13 × 100,519.09
  4. Step 4: Simplify right side
    250,278.86x = 37,736,687,355.96
  5. Step 5: Solve for x
    x = 37,736,687,355.96/250,278.86
  6. Step 6: Final answer
    x = 150,778.56

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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.