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Finding the Third Proportional to 170,784 and 256,725

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Solution

The third proportional to 170,784 and 256,725 is: 385,912.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,784 : 256,725 = 256,725 : x
  2. Step 2: Convert to fraction form
    170,784/256,725 = 256,725/x
  3. Step 3: Cross multiply
    170,784x = 256,725 × 256,725
  4. Step 4: Simplify right side
    170,784x = 65,907,725,625
  5. Step 5: Solve for x
    x = 65,907,725,625/170,784
  6. Step 6: Final answer
    x = 385,912.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.