Home / 231,451.12-319,436.56-140,789.49

Finding the Fourth Proportional to 231,451.12, 319,436.56 and 140,789.49

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Solution

The fourth proportional to 231,451.12, 319,436.56 and 140,789.49 is: 194,310.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,451.12 : 319,436.56 = 140,789.49 : x
  2. Step 2: Convert to fraction form
    231,451.12/319,436.56 = 140,789.49/x
  3. Step 3: Cross multiply
    231,451.12x = 319,436.56 × 140,789.49
  4. Step 4: Simplify right side
    231,451.12x = 44,973,311,144.68
  5. Step 5: Solve for x
    x = 44,973,311,144.68/231,451.12
  6. Step 6: Final answer
    x = 194,310.19

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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.