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Finding the Third Proportional to 206,973 and 312,081

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Solution

The third proportional to 206,973 and 312,081 is: 470,566.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,973 : 312,081 = 312,081 : x
  2. Step 2: Convert to fraction form
    206,973/312,081 = 312,081/x
  3. Step 3: Cross multiply
    206,973x = 312,081 × 312,081
  4. Step 4: Simplify right side
    206,973x = 97,394,550,561
  5. Step 5: Solve for x
    x = 97,394,550,561/206,973
  6. Step 6: Final answer
    x = 470,566.45

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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.