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Finding the Third Proportional to 75,211 and 163,389

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Solution

The third proportional to 75,211 and 163,389 is: 354,947.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,211 : 163,389 = 163,389 : x
  2. Step 2: Convert to fraction form
    75,211/163,389 = 163,389/x
  3. Step 3: Cross multiply
    75,211x = 163,389 × 163,389
  4. Step 4: Simplify right side
    75,211x = 26,695,965,321
  5. Step 5: Solve for x
    x = 26,695,965,321/75,211
  6. Step 6: Final answer
    x = 354,947.62

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.