Home / 231,439.36-319,371.26-129,447.15

Finding the Fourth Proportional to 231,439.36, 319,371.26 and 129,447.15

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Solution

The fourth proportional to 231,439.36, 319,371.26 and 129,447.15 is: 178,628.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,439.36 : 319,371.26 = 129,447.15 : x
  2. Step 2: Convert to fraction form
    231,439.36/319,371.26 = 129,447.15/x
  3. Step 3: Cross multiply
    231,439.36x = 319,371.26 × 129,447.15
  4. Step 4: Simplify right side
    231,439.36x = 41,341,697,554.03
  5. Step 5: Solve for x
    x = 41,341,697,554.03/231,439.36
  6. Step 6: Final answer
    x = 178,628.64

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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.