Home / 231,422.91-319,272.32-145,331.25

Finding the Fourth Proportional to 231,422.91, 319,272.32 and 145,331.25

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Solution

The fourth proportional to 231,422.91, 319,272.32 and 145,331.25 is: 200,499.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,422.91 : 319,272.32 = 145,331.25 : x
  2. Step 2: Convert to fraction form
    231,422.91/319,272.32 = 145,331.25/x
  3. Step 3: Cross multiply
    231,422.91x = 319,272.32 × 145,331.25
  4. Step 4: Simplify right side
    231,422.91x = 46,400,244,629.34
  5. Step 5: Solve for x
    x = 46,400,244,629.34/231,422.91
  6. Step 6: Final answer
    x = 200,499.79

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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.