Home / 231,540.78-319,517.55-130,940.94

Finding the Fourth Proportional to 231,540.78, 319,517.55 and 130,940.94

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Solution

The fourth proportional to 231,540.78, 319,517.55 and 130,940.94 is: 180,693.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,540.78 : 319,517.55 = 130,940.94 : x
  2. Step 2: Convert to fraction form
    231,540.78/319,517.55 = 130,940.94/x
  3. Step 3: Cross multiply
    231,540.78x = 319,517.55 × 130,940.94
  4. Step 4: Simplify right side
    231,540.78x = 41,837,928,343.50
  5. Step 5: Solve for x
    x = 41,837,928,343.50/231,540.78
  6. Step 6: Final answer
    x = 180,693.56

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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.