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Finding the Fourth Proportional to 231,571.31, 319,466.97 and 136,034.91

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Solution

The fourth proportional to 231,571.31, 319,466.97 and 136,034.91 is: 187,668.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,571.31 : 319,466.97 = 136,034.91 : x
  2. Step 2: Convert to fraction form
    231,571.31/319,466.97 = 136,034.91/x
  3. Step 3: Cross multiply
    231,571.31x = 319,466.97 × 136,034.91
  4. Step 4: Simplify right side
    231,571.31x = 43,458,660,511.92
  5. Step 5: Solve for x
    x = 43,458,660,511.92/231,571.31
  6. Step 6: Final answer
    x = 187,668.59

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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.