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Finding the Third Proportional to 120,878 and 263,262

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Solution

The third proportional to 120,878 and 263,262 is: 573,362.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,878 : 263,262 = 263,262 : x
  2. Step 2: Convert to fraction form
    120,878/263,262 = 263,262/x
  3. Step 3: Cross multiply
    120,878x = 263,262 × 263,262
  4. Step 4: Simplify right side
    120,878x = 69,306,880,644
  5. Step 5: Solve for x
    x = 69,306,880,644/120,878
  6. Step 6: Final answer
    x = 573,362.24

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.