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Finding the Third Proportional to 120,451.50 and 257,571

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Solution

The third proportional to 120,451.50 and 257,571 is: 550,784.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,451.50 : 257,571 = 257,571 : x
  2. Step 2: Convert to fraction form
    120,451.50/257,571 = 257,571/x
  3. Step 3: Cross multiply
    120,451.50x = 257,571 × 257,571
  4. Step 4: Simplify right side
    120,451.50x = 66,342,820,041
  5. Step 5: Solve for x
    x = 66,342,820,041/120,451.50
  6. Step 6: Final answer
    x = 550,784.51

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.