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Finding the Third Proportional to 197,936 and 426,489

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Solution

The third proportional to 197,936 and 426,489 is: 918,947.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,936 : 426,489 = 426,489 : x
  2. Step 2: Convert to fraction form
    197,936/426,489 = 426,489/x
  3. Step 3: Cross multiply
    197,936x = 426,489 × 426,489
  4. Step 4: Simplify right side
    197,936x = 181,892,867,121
  5. Step 5: Solve for x
    x = 181,892,867,121/197,936
  6. Step 6: Final answer
    x = 918,947.88

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.