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Finding the Third Proportional to 217,686 and 319,077

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Solution

The third proportional to 217,686 and 319,077 is: 467,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,686 : 319,077 = 319,077 : x
  2. Step 2: Convert to fraction form
    217,686/319,077 = 319,077/x
  3. Step 3: Cross multiply
    217,686x = 319,077 × 319,077
  4. Step 4: Simplify right side
    217,686x = 101,810,131,929
  5. Step 5: Solve for x
    x = 101,810,131,929/217,686
  6. Step 6: Final answer
    x = 467,692.60

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.