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Finding the Fourth Proportional to 207,349.16, 311,008.92 and 80,965.73

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Solution

The fourth proportional to 207,349.16, 311,008.92 and 80,965.73 is: 121,442.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,349.16 : 311,008.92 = 80,965.73 : x
  2. Step 2: Convert to fraction form
    207,349.16/311,008.92 = 80,965.73/x
  3. Step 3: Cross multiply
    207,349.16x = 311,008.92 × 80,965.73
  4. Step 4: Simplify right side
    207,349.16x = 25,181,064,244.31
  5. Step 5: Solve for x
    x = 25,181,064,244.31/207,349.16
  6. Step 6: Final answer
    x = 121,442.81

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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.