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Finding the Third Proportional to 133,689 and 285,419

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Solution

The third proportional to 133,689 and 285,419 is: 609,354.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,689 : 285,419 = 285,419 : x
  2. Step 2: Convert to fraction form
    133,689/285,419 = 285,419/x
  3. Step 3: Cross multiply
    133,689x = 285,419 × 285,419
  4. Step 4: Simplify right side
    133,689x = 81,464,005,561
  5. Step 5: Solve for x
    x = 81,464,005,561/133,689
  6. Step 6: Final answer
    x = 609,354.59

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.