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Finding the Third Proportional to 149,072 and 221,580

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Solution

The third proportional to 149,072 and 221,580 is: 329,355.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,072 : 221,580 = 221,580 : x
  2. Step 2: Convert to fraction form
    149,072/221,580 = 221,580/x
  3. Step 3: Cross multiply
    149,072x = 221,580 × 221,580
  4. Step 4: Simplify right side
    149,072x = 49,097,696,400
  5. Step 5: Solve for x
    x = 49,097,696,400/149,072
  6. Step 6: Final answer
    x = 329,355.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.