Home / 231,434.12-319,364.06-129,441.92

Finding the Fourth Proportional to 231,434.12, 319,364.06 and 129,441.92

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Solution

The fourth proportional to 231,434.12, 319,364.06 and 129,441.92 is: 178,621.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,434.12 : 319,364.06 = 129,441.92 : x
  2. Step 2: Convert to fraction form
    231,434.12/319,364.06 = 129,441.92/x
  3. Step 3: Cross multiply
    231,434.12x = 319,364.06 × 129,441.92
  4. Step 4: Simplify right side
    231,434.12x = 41,339,094,861.37
  5. Step 5: Solve for x
    x = 41,339,094,861.37/231,434.12
  6. Step 6: Final answer
    x = 178,621.44

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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.