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Finding the Third Proportional to 257,604 and 394,086

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Solution

The third proportional to 257,604 and 394,086 is: 602,877.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,604 : 394,086 = 394,086 : x
  2. Step 2: Convert to fraction form
    257,604/394,086 = 394,086/x
  3. Step 3: Cross multiply
    257,604x = 394,086 × 394,086
  4. Step 4: Simplify right side
    257,604x = 155,303,775,396
  5. Step 5: Solve for x
    x = 155,303,775,396/257,604
  6. Step 6: Final answer
    x = 602,877.97

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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.