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Finding the Fourth Proportional to 343,919.78, 516,229.59 and 231,245.54

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Solution

The fourth proportional to 343,919.78, 516,229.59 and 231,245.54 is: 347,103.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,919.78 : 516,229.59 = 231,245.54 : x
  2. Step 2: Convert to fraction form
    343,919.78/516,229.59 = 231,245.54/x
  3. Step 3: Cross multiply
    343,919.78x = 516,229.59 × 231,245.54
  4. Step 4: Simplify right side
    343,919.78x = 119,375,790,303.53
  5. Step 5: Solve for x
    x = 119,375,790,303.53/343,919.78
  6. Step 6: Final answer
    x = 347,103.59

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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.