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Finding the Fourth Proportional to 231,220.88, 319,084.81 and 125,236.88

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Solution

The fourth proportional to 231,220.88, 319,084.81 and 125,236.88 is: 172,826.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,220.88 : 319,084.81 = 125,236.88 : x
  2. Step 2: Convert to fraction form
    231,220.88/319,084.81 = 125,236.88/x
  3. Step 3: Cross multiply
    231,220.88x = 319,084.81 × 125,236.88
  4. Step 4: Simplify right side
    231,220.88x = 39,961,184,151.28
  5. Step 5: Solve for x
    x = 39,961,184,151.28/231,220.88
  6. Step 6: Final answer
    x = 172,826.89

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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.