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Finding the Third Proportional to 217,269 and 318,127.50

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Solution

The third proportional to 217,269 and 318,127.50 is: 465,805.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,269 : 318,127.50 = 318,127.50 : x
  2. Step 2: Convert to fraction form
    217,269/318,127.50 = 318,127.50/x
  3. Step 3: Cross multiply
    217,269x = 318,127.50 × 318,127.50
  4. Step 4: Simplify right side
    217,269x = 101,205,106,256.25
  5. Step 5: Solve for x
    x = 101,205,106,256.25/217,269
  6. Step 6: Final answer
    x = 465,805.55

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.