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Finding the Third Proportional to 64,649 and 142,258

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Solution

The third proportional to 64,649 and 142,258 is: 313,034.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,649 : 142,258 = 142,258 : x
  2. Step 2: Convert to fraction form
    64,649/142,258 = 142,258/x
  3. Step 3: Cross multiply
    64,649x = 142,258 × 142,258
  4. Step 4: Simplify right side
    64,649x = 20,237,338,564
  5. Step 5: Solve for x
    x = 20,237,338,564/64,649
  6. Step 6: Final answer
    x = 313,034.05

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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.