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Finding the Third Proportional to 170,840 and 260,472

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Solution

The third proportional to 170,840 and 260,472 is: 397,129.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,840 : 260,472 = 260,472 : x
  2. Step 2: Convert to fraction form
    170,840/260,472 = 260,472/x
  3. Step 3: Cross multiply
    170,840x = 260,472 × 260,472
  4. Step 4: Simplify right side
    170,840x = 67,845,662,784
  5. Step 5: Solve for x
    x = 67,845,662,784/170,840
  6. Step 6: Final answer
    x = 397,129.85

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.