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Finding the Third Proportional to 257,622 and 394,089

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Solution

The third proportional to 257,622 and 394,089 is: 602,845.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,622 : 394,089 = 394,089 : x
  2. Step 2: Convert to fraction form
    257,622/394,089 = 394,089/x
  3. Step 3: Cross multiply
    257,622x = 394,089 × 394,089
  4. Step 4: Simplify right side
    257,622x = 155,306,139,921
  5. Step 5: Solve for x
    x = 155,306,139,921/257,622
  6. Step 6: Final answer
    x = 602,845.02

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.