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Finding the Third Proportional to 69,460 and 149,464

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Solution

The third proportional to 69,460 and 149,464 is: 321,616.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,460 : 149,464 = 149,464 : x
  2. Step 2: Convert to fraction form
    69,460/149,464 = 149,464/x
  3. Step 3: Cross multiply
    69,460x = 149,464 × 149,464
  4. Step 4: Simplify right side
    69,460x = 22,339,487,296
  5. Step 5: Solve for x
    x = 22,339,487,296/69,460
  6. Step 6: Final answer
    x = 321,616.57

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.