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Finding the Third Proportional to 149,771 and 320,602

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Solution

The third proportional to 149,771 and 320,602 is: 686,285.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,771 : 320,602 = 320,602 : x
  2. Step 2: Convert to fraction form
    149,771/320,602 = 320,602/x
  3. Step 3: Cross multiply
    149,771x = 320,602 × 320,602
  4. Step 4: Simplify right side
    149,771x = 102,785,642,404
  5. Step 5: Solve for x
    x = 102,785,642,404/149,771
  6. Step 6: Final answer
    x = 686,285.34

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.