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Finding the Third Proportional to 221,907 and 485,245

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Solution

The third proportional to 221,907 and 485,245 is: 1,061,087.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,907 : 485,245 = 485,245 : x
  2. Step 2: Convert to fraction form
    221,907/485,245 = 485,245/x
  3. Step 3: Cross multiply
    221,907x = 485,245 × 485,245
  4. Step 4: Simplify right side
    221,907x = 235,462,710,025
  5. Step 5: Solve for x
    x = 235,462,710,025/221,907
  6. Step 6: Final answer
    x = 1,061,087.35

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.