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Finding the Fourth Proportional to 207,354.82, 310,847 and 80,965.66

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Solution

The fourth proportional to 207,354.82, 310,847 and 80,965.66 is: 121,376.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,354.82 : 310,847 = 80,965.66 : x
  2. Step 2: Convert to fraction form
    207,354.82/310,847 = 80,965.66/x
  3. Step 3: Cross multiply
    207,354.82x = 310,847 × 80,965.66
  4. Step 4: Simplify right side
    207,354.82x = 25,167,930,959.79
  5. Step 5: Solve for x
    x = 25,167,930,959.79/207,354.82
  6. Step 6: Final answer
    x = 121,376.16

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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.