Home / 231,396.20-319,324.61-129,420.44

Finding the Fourth Proportional to 231,396.20, 319,324.61 and 129,420.44

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Solution

The fourth proportional to 231,396.20, 319,324.61 and 129,420.44 is: 178,599.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,396.20 : 319,324.61 = 129,420.44 : x
  2. Step 2: Convert to fraction form
    231,396.20/319,324.61 = 129,420.44/x
  3. Step 3: Cross multiply
    231,396.20x = 319,324.61 × 129,420.44
  4. Step 4: Simplify right side
    231,396.20x = 41,327,131,529.03
  5. Step 5: Solve for x
    x = 41,327,131,529.03/231,396.20
  6. Step 6: Final answer
    x = 178,599.01

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1.5x scale

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.