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Finding the Third Proportional to 196,445 and 428,874

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Solution

The third proportional to 196,445 and 428,874 is: 936,307.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,445 : 428,874 = 428,874 : x
  2. Step 2: Convert to fraction form
    196,445/428,874 = 428,874/x
  3. Step 3: Cross multiply
    196,445x = 428,874 × 428,874
  4. Step 4: Simplify right side
    196,445x = 183,932,907,876
  5. Step 5: Solve for x
    x = 183,932,907,876/196,445
  6. Step 6: Final answer
    x = 936,307.40

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.