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Finding the Fourth Proportional to 204,630.44, 306,760.97 and 86,308.88

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Solution

The fourth proportional to 204,630.44, 306,760.97 and 86,308.88 is: 129,385.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,630.44 : 306,760.97 = 86,308.88 : x
  2. Step 2: Convert to fraction form
    204,630.44/306,760.97 = 86,308.88/x
  3. Step 3: Cross multiply
    204,630.44x = 306,760.97 × 86,308.88
  4. Step 4: Simplify right side
    204,630.44x = 26,476,194,430.38
  5. Step 5: Solve for x
    x = 26,476,194,430.38/204,630.44
  6. Step 6: Final answer
    x = 129,385.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.