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Finding the Third Proportional to 120,366 and 186,278

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Solution

The third proportional to 120,366 and 186,278 is: 288,283.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,366 : 186,278 = 186,278 : x
  2. Step 2: Convert to fraction form
    120,366/186,278 = 186,278/x
  3. Step 3: Cross multiply
    120,366x = 186,278 × 186,278
  4. Step 4: Simplify right side
    120,366x = 34,699,493,284
  5. Step 5: Solve for x
    x = 34,699,493,284/120,366
  6. Step 6: Final answer
    x = 288,283.18

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.