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Finding the Third Proportional to 257,539.50 and 393,994.13

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Solution

The third proportional to 257,539.50 and 393,994.13 is: 602,747.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,539.50 : 393,994.13 = 393,994.13 : x
  2. Step 2: Convert to fraction form
    257,539.50/393,994.13 = 393,994.13/x
  3. Step 3: Cross multiply
    257,539.50x = 393,994.13 × 393,994.13
  4. Step 4: Simplify right side
    257,539.50x = 155,231,370,534.52
  5. Step 5: Solve for x
    x = 155,231,370,534.52/257,539.50
  6. Step 6: Final answer
    x = 602,747.81

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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.