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Finding the Third Proportional to 103,691 and 279,322

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Solution

The third proportional to 103,691 and 279,322 is: 752,435.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,691 : 279,322 = 279,322 : x
  2. Step 2: Convert to fraction form
    103,691/279,322 = 279,322/x
  3. Step 3: Cross multiply
    103,691x = 279,322 × 279,322
  4. Step 4: Simplify right side
    103,691x = 78,020,779,684
  5. Step 5: Solve for x
    x = 78,020,779,684/103,691
  6. Step 6: Final answer
    x = 752,435.41

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Why These Related Problems?

These problems maintain the same ratio (2.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.