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Finding the Third Proportional to 257,458.50 and 393,849

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Solution

The third proportional to 257,458.50 and 393,849 is: 602,493.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,458.50 : 393,849 = 393,849 : x
  2. Step 2: Convert to fraction form
    257,458.50/393,849 = 393,849/x
  3. Step 3: Cross multiply
    257,458.50x = 393,849 × 393,849
  4. Step 4: Simplify right side
    257,458.50x = 155,117,034,801
  5. Step 5: Solve for x
    x = 155,117,034,801/257,458.50
  6. Step 6: Final answer
    x = 602,493.35

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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.