Home / 231,479.20-319,439.76-130,877.60

Finding the Fourth Proportional to 231,479.20, 319,439.76 and 130,877.60

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Solution

The fourth proportional to 231,479.20, 319,439.76 and 130,877.60 is: 180,610.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,479.20 : 319,439.76 = 130,877.60 : x
  2. Step 2: Convert to fraction form
    231,479.20/319,439.76 = 130,877.60/x
  3. Step 3: Cross multiply
    231,479.20x = 319,439.76 × 130,877.60
  4. Step 4: Simplify right side
    231,479.20x = 41,807,509,133.38
  5. Step 5: Solve for x
    x = 41,807,509,133.38/231,479.20
  6. Step 6: Final answer
    x = 180,610.22

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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.