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Finding the Third Proportional to 138,751 and 304,778

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Solution

The third proportional to 138,751 and 304,778 is: 669,469.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,751 : 304,778 = 304,778 : x
  2. Step 2: Convert to fraction form
    138,751/304,778 = 304,778/x
  3. Step 3: Cross multiply
    138,751x = 304,778 × 304,778
  4. Step 4: Simplify right side
    138,751x = 92,889,629,284
  5. Step 5: Solve for x
    x = 92,889,629,284/138,751
  6. Step 6: Final answer
    x = 669,469.98

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.