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Finding the Fourth Proportional to 204,091.20, 306,136.80 and 181,540.80

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Solution

The fourth proportional to 204,091.20, 306,136.80 and 181,540.80 is: 272,311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,091.20 : 306,136.80 = 181,540.80 : x
  2. Step 2: Convert to fraction form
    204,091.20/306,136.80 = 181,540.80/x
  3. Step 3: Cross multiply
    204,091.20x = 306,136.80 × 181,540.80
  4. Step 4: Simplify right side
    204,091.20x = 55,576,319,581.44
  5. Step 5: Solve for x
    x = 55,576,319,581.44/204,091.20
  6. Step 6: Final answer
    x = 272,311.20

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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.