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Finding the Third Proportional to 221,954.50 and 489,153.50

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Solution

The third proportional to 221,954.50 and 489,153.50 is: 1,078,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,954.50 : 489,153.50 = 489,153.50 : x
  2. Step 2: Convert to fraction form
    221,954.50/489,153.50 = 489,153.50/x
  3. Step 3: Cross multiply
    221,954.50x = 489,153.50 × 489,153.50
  4. Step 4: Simplify right side
    221,954.50x = 239,271,146,562.25
  5. Step 5: Solve for x
    x = 239,271,146,562.25/221,954.50
  6. Step 6: Final answer
    x = 1,078,018.90

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.