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Finding the Third Proportional to 196,815 and 407,634

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Solution

The third proportional to 196,815 and 407,634 is: 844,272.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,815 : 407,634 = 407,634 : x
  2. Step 2: Convert to fraction form
    196,815/407,634 = 407,634/x
  3. Step 3: Cross multiply
    196,815x = 407,634 × 407,634
  4. Step 4: Simplify right side
    196,815x = 166,165,477,956
  5. Step 5: Solve for x
    x = 166,165,477,956/196,815
  6. Step 6: Final answer
    x = 844,272.43

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.