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Finding the Fourth Proportional to 207,279.16, 310,872.30 and 80,922.40

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Solution

The fourth proportional to 207,279.16, 310,872.30 and 80,922.40 is: 121,365.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,279.16 : 310,872.30 = 80,922.40 : x
  2. Step 2: Convert to fraction form
    207,279.16/310,872.30 = 80,922.40/x
  3. Step 3: Cross multiply
    207,279.16x = 310,872.30 × 80,922.40
  4. Step 4: Simplify right side
    207,279.16x = 25,156,532,609.52
  5. Step 5: Solve for x
    x = 25,156,532,609.52/207,279.16
  6. Step 6: Final answer
    x = 121,365.47

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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.