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Finding the Third Proportional to 90,977 and 197,494

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Solution

The third proportional to 90,977 and 197,494 is: 428,722.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,977 : 197,494 = 197,494 : x
  2. Step 2: Convert to fraction form
    90,977/197,494 = 197,494/x
  3. Step 3: Cross multiply
    90,977x = 197,494 × 197,494
  4. Step 4: Simplify right side
    90,977x = 39,003,880,036
  5. Step 5: Solve for x
    x = 39,003,880,036/90,977
  6. Step 6: Final answer
    x = 428,722.42

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.