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Finding the Third Proportional to 197,320 and 426,172

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Solution

The third proportional to 197,320 and 426,172 is: 920,446.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,320 : 426,172 = 426,172 : x
  2. Step 2: Convert to fraction form
    197,320/426,172 = 426,172/x
  3. Step 3: Cross multiply
    197,320x = 426,172 × 426,172
  4. Step 4: Simplify right side
    197,320x = 181,622,573,584
  5. Step 5: Solve for x
    x = 181,622,573,584/197,320
  6. Step 6: Final answer
    x = 920,446.86

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.