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Finding the Third Proportional to 70,247 and 165,821

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Solution

The third proportional to 70,247 and 165,821 is: 391,427.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,247 : 165,821 = 165,821 : x
  2. Step 2: Convert to fraction form
    70,247/165,821 = 165,821/x
  3. Step 3: Cross multiply
    70,247x = 165,821 × 165,821
  4. Step 4: Simplify right side
    70,247x = 27,496,604,041
  5. Step 5: Solve for x
    x = 27,496,604,041/70,247
  6. Step 6: Final answer
    x = 391,427.45

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.