Home / 231,399.20-319,335-130,797.20

Finding the Fourth Proportional to 231,399.20, 319,335 and 130,797.20

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Solution

The fourth proportional to 231,399.20, 319,335 and 130,797.20 is: 180,502.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,399.20 : 319,335 = 130,797.20 : x
  2. Step 2: Convert to fraction form
    231,399.20/319,335 = 130,797.20/x
  3. Step 3: Cross multiply
    231,399.20x = 319,335 × 130,797.20
  4. Step 4: Simplify right side
    231,399.20x = 41,768,123,862
  5. Step 5: Solve for x
    x = 41,768,123,862/231,399.20
  6. Step 6: Final answer
    x = 180,502.46

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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.