Home / 231,352.45-319,264.58-129,378.11

Finding the Fourth Proportional to 231,352.45, 319,264.58 and 129,378.11

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Solution

The fourth proportional to 231,352.45, 319,264.58 and 129,378.11 is: 178,540.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,352.45 : 319,264.58 = 129,378.11 : x
  2. Step 2: Convert to fraction form
    231,352.45/319,264.58 = 129,378.11/x
  3. Step 3: Cross multiply
    231,352.45x = 319,264.58 × 129,378.11
  4. Step 4: Simplify right side
    231,352.45x = 41,305,847,303.45
  5. Step 5: Solve for x
    x = 41,305,847,303.45/231,352.45
  6. Step 6: Final answer
    x = 178,540.78

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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.