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Finding the Third Proportional to 221,430 and 332,087

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Solution

The third proportional to 221,430 and 332,087 is: 498,043.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,430 : 332,087 = 332,087 : x
  2. Step 2: Convert to fraction form
    221,430/332,087 = 332,087/x
  3. Step 3: Cross multiply
    221,430x = 332,087 × 332,087
  4. Step 4: Simplify right side
    221,430x = 110,281,775,569
  5. Step 5: Solve for x
    x = 110,281,775,569/221,430
  6. Step 6: Final answer
    x = 498,043.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.