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Finding the Third Proportional to 269,217 and 418,027.50

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Solution

The third proportional to 269,217 and 418,027.50 is: 649,093.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,217 : 418,027.50 = 418,027.50 : x
  2. Step 2: Convert to fraction form
    269,217/418,027.50 = 418,027.50/x
  3. Step 3: Cross multiply
    269,217x = 418,027.50 × 418,027.50
  4. Step 4: Simplify right side
    269,217x = 174,746,990,756.25
  5. Step 5: Solve for x
    x = 174,746,990,756.25/269,217
  6. Step 6: Final answer
    x = 649,093.45

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.