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Finding the Third Proportional to 135,803 and 211,469

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Solution

The third proportional to 135,803 and 211,469 is: 329,294.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,803 : 211,469 = 211,469 : x
  2. Step 2: Convert to fraction form
    135,803/211,469 = 211,469/x
  3. Step 3: Cross multiply
    135,803x = 211,469 × 211,469
  4. Step 4: Simplify right side
    135,803x = 44,719,137,961
  5. Step 5: Solve for x
    x = 44,719,137,961/135,803
  6. Step 6: Final answer
    x = 329,294.18

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.