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Finding the Third Proportional to 170,128 and 371,385

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Solution

The third proportional to 170,128 and 371,385 is: 810,723.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,128 : 371,385 = 371,385 : x
  2. Step 2: Convert to fraction form
    170,128/371,385 = 371,385/x
  3. Step 3: Cross multiply
    170,128x = 371,385 × 371,385
  4. Step 4: Simplify right side
    170,128x = 137,926,818,225
  5. Step 5: Solve for x
    x = 137,926,818,225/170,128
  6. Step 6: Final answer
    x = 810,723.80

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.