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Finding the Third Proportional to 196,519 and 421,073

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Solution

The third proportional to 196,519 and 421,073 is: 902,215.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,519 : 421,073 = 421,073 : x
  2. Step 2: Convert to fraction form
    196,519/421,073 = 421,073/x
  3. Step 3: Cross multiply
    196,519x = 421,073 × 421,073
  4. Step 4: Simplify right side
    196,519x = 177,302,471,329
  5. Step 5: Solve for x
    x = 177,302,471,329/196,519
  6. Step 6: Final answer
    x = 902,215.42

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.