Home / 231,410.48-319,376.03-129,441.60

Finding the Fourth Proportional to 231,410.48, 319,376.03 and 129,441.60

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Solution

The fourth proportional to 231,410.48, 319,376.03 and 129,441.60 is: 178,645.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,410.48 : 319,376.03 = 129,441.60 : x
  2. Step 2: Convert to fraction form
    231,410.48/319,376.03 = 129,441.60/x
  3. Step 3: Cross multiply
    231,410.48x = 319,376.03 × 129,441.60
  4. Step 4: Simplify right side
    231,410.48x = 41,340,543,677.64
  5. Step 5: Solve for x
    x = 41,340,543,677.64/231,410.48
  6. Step 6: Final answer
    x = 178,645.95

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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.