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Finding the Fourth Proportional to 231,739, 319,799.82 and 125,755

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Solution

The fourth proportional to 231,739, 319,799.82 and 125,755 is: 173,541.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,739 : 319,799.82 = 125,755 : x
  2. Step 2: Convert to fraction form
    231,739/319,799.82 = 125,755/x
  3. Step 3: Cross multiply
    231,739x = 319,799.82 × 125,755
  4. Step 4: Simplify right side
    231,739x = 40,216,426,364.10
  5. Step 5: Solve for x
    x = 40,216,426,364.10/231,739
  6. Step 6: Final answer
    x = 173,541.90

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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.