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Finding the Third Proportional to 217,869 and 333,074

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Solution

The third proportional to 217,869 and 333,074 is: 509,197.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,869 : 333,074 = 333,074 : x
  2. Step 2: Convert to fraction form
    217,869/333,074 = 333,074/x
  3. Step 3: Cross multiply
    217,869x = 333,074 × 333,074
  4. Step 4: Simplify right side
    217,869x = 110,938,289,476
  5. Step 5: Solve for x
    x = 110,938,289,476/217,869
  6. Step 6: Final answer
    x = 509,197.22

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.