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Finding the Third Proportional to 161,445 and 221,620

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Solution

The third proportional to 161,445 and 221,620 is: 304,223.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,445 : 221,620 = 221,620 : x
  2. Step 2: Convert to fraction form
    161,445/221,620 = 221,620/x
  3. Step 3: Cross multiply
    161,445x = 221,620 × 221,620
  4. Step 4: Simplify right side
    161,445x = 49,115,424,400
  5. Step 5: Solve for x
    x = 49,115,424,400/161,445
  6. Step 6: Final answer
    x = 304,223.88

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.