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Finding the Third Proportional to 158,742 and 339,313

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Solution

The third proportional to 158,742 and 339,313 is: 725,285.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,742 : 339,313 = 339,313 : x
  2. Step 2: Convert to fraction form
    158,742/339,313 = 339,313/x
  3. Step 3: Cross multiply
    158,742x = 339,313 × 339,313
  4. Step 4: Simplify right side
    158,742x = 115,133,311,969
  5. Step 5: Solve for x
    x = 115,133,311,969/158,742
  6. Step 6: Final answer
    x = 725,285.76

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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.