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Finding the Third Proportional to 151,131 and 330,990

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Solution

The third proportional to 151,131 and 330,990 is: 724,896.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,131 : 330,990 = 330,990 : x
  2. Step 2: Convert to fraction form
    151,131/330,990 = 330,990/x
  3. Step 3: Cross multiply
    151,131x = 330,990 × 330,990
  4. Step 4: Simplify right side
    151,131x = 109,554,380,100
  5. Step 5: Solve for x
    x = 109,554,380,100/151,131
  6. Step 6: Final answer
    x = 724,896.81

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.