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Finding the Third Proportional to 268,812 and 397,089

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Solution

The third proportional to 268,812 and 397,089 is: 586,579.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,812 : 397,089 = 397,089 : x
  2. Step 2: Convert to fraction form
    268,812/397,089 = 397,089/x
  3. Step 3: Cross multiply
    268,812x = 397,089 × 397,089
  4. Step 4: Simplify right side
    268,812x = 157,679,673,921
  5. Step 5: Solve for x
    x = 157,679,673,921/268,812
  6. Step 6: Final answer
    x = 586,579.74

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.