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Finding the Fourth Proportional to 231,481.68, 319,373.84 and 150,879.78

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Solution

The fourth proportional to 231,481.68, 319,373.84 and 150,879.78 is: 208,167.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,481.68 : 319,373.84 = 150,879.78 : x
  2. Step 2: Convert to fraction form
    231,481.68/319,373.84 = 150,879.78/x
  3. Step 3: Cross multiply
    231,481.68x = 319,373.84 × 150,879.78
  4. Step 4: Simplify right side
    231,481.68x = 48,187,054,716.96
  5. Step 5: Solve for x
    x = 48,187,054,716.96/231,481.68
  6. Step 6: Final answer
    x = 208,167.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.