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Finding the Fourth Proportional to 231,521.63, 319,540.82 and 136,028.30

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Solution

The fourth proportional to 231,521.63, 319,540.82 and 136,028.30 is: 187,743.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,521.63 : 319,540.82 = 136,028.30 : x
  2. Step 2: Convert to fraction form
    231,521.63/319,540.82 = 136,028.30/x
  3. Step 3: Cross multiply
    231,521.63x = 319,540.82 × 136,028.30
  4. Step 4: Simplify right side
    231,521.63x = 43,466,592,247.36
  5. Step 5: Solve for x
    x = 43,466,592,247.36/231,521.63
  6. Step 6: Final answer
    x = 187,743.12

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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.