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Finding the Third Proportional to 196,926 and 421,873

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Solution

The third proportional to 196,926 and 421,873 is: 903,775.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,926 : 421,873 = 421,873 : x
  2. Step 2: Convert to fraction form
    196,926/421,873 = 421,873/x
  3. Step 3: Cross multiply
    196,926x = 421,873 × 421,873
  4. Step 4: Simplify right side
    196,926x = 177,976,828,129
  5. Step 5: Solve for x
    x = 177,976,828,129/196,926
  6. Step 6: Final answer
    x = 903,775.16

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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.