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Finding the Third Proportional to 175,392 and 378,809

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Solution

The third proportional to 175,392 and 378,809 is: 818,145.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,392 : 378,809 = 378,809 : x
  2. Step 2: Convert to fraction form
    175,392/378,809 = 378,809/x
  3. Step 3: Cross multiply
    175,392x = 378,809 × 378,809
  4. Step 4: Simplify right side
    175,392x = 143,496,258,481
  5. Step 5: Solve for x
    x = 143,496,258,481/175,392
  6. Step 6: Final answer
    x = 818,145.97

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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.