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Finding the Fourth Proportional to 231,571.82, 319,546.92 and 129,591.98

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Solution

The fourth proportional to 231,571.82, 319,546.92 and 129,591.98 is: 178,824.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,571.82 : 319,546.92 = 129,591.98 : x
  2. Step 2: Convert to fraction form
    231,571.82/319,546.92 = 129,591.98/x
  3. Step 3: Cross multiply
    231,571.82x = 319,546.92 × 129,591.98
  4. Step 4: Simplify right side
    231,571.82x = 41,410,718,065.70
  5. Step 5: Solve for x
    x = 41,410,718,065.70/231,571.82
  6. Step 6: Final answer
    x = 178,824.51

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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.