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Finding the Third Proportional to 206,208 and 309,858

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Solution

The third proportional to 206,208 and 309,858 is: 465,607.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,208 : 309,858 = 309,858 : x
  2. Step 2: Convert to fraction form
    206,208/309,858 = 309,858/x
  3. Step 3: Cross multiply
    206,208x = 309,858 × 309,858
  4. Step 4: Simplify right side
    206,208x = 96,011,980,164
  5. Step 5: Solve for x
    x = 96,011,980,164/206,208
  6. Step 6: Final answer
    x = 465,607.45

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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.