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Finding the Third Proportional to 163,487 and 221,902

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Solution

The third proportional to 163,487 and 221,902 is: 301,189.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,487 : 221,902 = 221,902 : x
  2. Step 2: Convert to fraction form
    163,487/221,902 = 221,902/x
  3. Step 3: Cross multiply
    163,487x = 221,902 × 221,902
  4. Step 4: Simplify right side
    163,487x = 49,240,497,604
  5. Step 5: Solve for x
    x = 49,240,497,604/163,487
  6. Step 6: Final answer
    x = 301,189.07

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.