Home / 231,473.28-319,327.20-135,978.24

Finding the Fourth Proportional to 231,473.28, 319,327.20 and 135,978.24

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Solution

The fourth proportional to 231,473.28, 319,327.20 and 135,978.24 is: 187,587.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,473.28 : 319,327.20 = 135,978.24 : x
  2. Step 2: Convert to fraction form
    231,473.28/319,327.20 = 135,978.24/x
  3. Step 3: Cross multiply
    231,473.28x = 319,327.20 × 135,978.24
  4. Step 4: Simplify right side
    231,473.28x = 43,421,550,640.13
  5. Step 5: Solve for x
    x = 43,421,550,640.13/231,473.28
  6. Step 6: Final answer
    x = 187,587.75

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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.