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Finding the Third Proportional to 158,979 and 336,912

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Solution

The third proportional to 158,979 and 336,912 is: 713,991.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,979 : 336,912 = 336,912 : x
  2. Step 2: Convert to fraction form
    158,979/336,912 = 336,912/x
  3. Step 3: Cross multiply
    158,979x = 336,912 × 336,912
  4. Step 4: Simplify right side
    158,979x = 113,509,695,744
  5. Step 5: Solve for x
    x = 113,509,695,744/158,979
  6. Step 6: Final answer
    x = 713,991.76

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.