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Finding the Third Proportional to 144,810 and 221,521

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Solution

The third proportional to 144,810 and 221,521 is: 338,868.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,810 : 221,521 = 221,521 : x
  2. Step 2: Convert to fraction form
    144,810/221,521 = 221,521/x
  3. Step 3: Cross multiply
    144,810x = 221,521 × 221,521
  4. Step 4: Simplify right side
    144,810x = 49,071,553,441
  5. Step 5: Solve for x
    x = 49,071,553,441/144,810
  6. Step 6: Final answer
    x = 338,868.54

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.