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Finding the Third Proportional to 71,438 and 155,576

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Solution

The third proportional to 71,438 and 155,576 is: 338,809.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,438 : 155,576 = 155,576 : x
  2. Step 2: Convert to fraction form
    71,438/155,576 = 155,576/x
  3. Step 3: Cross multiply
    71,438x = 155,576 × 155,576
  4. Step 4: Simplify right side
    71,438x = 24,203,891,776
  5. Step 5: Solve for x
    x = 24,203,891,776/71,438
  6. Step 6: Final answer
    x = 338,809.76

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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.