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Finding the Third Proportional to 206,968 and 311,661

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Solution

The third proportional to 206,968 and 311,661 is: 469,312.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,968 : 311,661 = 311,661 : x
  2. Step 2: Convert to fraction form
    206,968/311,661 = 311,661/x
  3. Step 3: Cross multiply
    206,968x = 311,661 × 311,661
  4. Step 4: Simplify right side
    206,968x = 97,132,578,921
  5. Step 5: Solve for x
    x = 97,132,578,921/206,968
  6. Step 6: Final answer
    x = 469,312.06

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.