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Finding the Third Proportional to 77,814 and 170,280

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Solution

The third proportional to 77,814 and 170,280 is: 372,622.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,814 : 170,280 = 170,280 : x
  2. Step 2: Convert to fraction form
    77,814/170,280 = 170,280/x
  3. Step 3: Cross multiply
    77,814x = 170,280 × 170,280
  4. Step 4: Simplify right side
    77,814x = 28,995,278,400
  5. Step 5: Solve for x
    x = 28,995,278,400/77,814
  6. Step 6: Final answer
    x = 372,622.90

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.