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Finding the Fourth Proportional to 308,747.44, 463,121.16 and 87,131.44

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Solution

The fourth proportional to 308,747.44, 463,121.16 and 87,131.44 is: 130,697.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,747.44 : 463,121.16 = 87,131.44 : x
  2. Step 2: Convert to fraction form
    308,747.44/463,121.16 = 87,131.44/x
  3. Step 3: Cross multiply
    308,747.44x = 463,121.16 × 87,131.44
  4. Step 4: Simplify right side
    308,747.44x = 40,352,413,565.27
  5. Step 5: Solve for x
    x = 40,352,413,565.27/308,747.44
  6. Step 6: Final answer
    x = 130,697.16

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Similar ratio
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1.5x scale

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.