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Finding the Third Proportional to 280,172.25 and 619,224.75

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Solution

The third proportional to 280,172.25 and 619,224.75 is: 1,368,584.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,172.25 : 619,224.75 = 619,224.75 : x
  2. Step 2: Convert to fraction form
    280,172.25/619,224.75 = 619,224.75/x
  3. Step 3: Cross multiply
    280,172.25x = 619,224.75 × 619,224.75
  4. Step 4: Simplify right side
    280,172.25x = 383,439,291,012.56
  5. Step 5: Solve for x
    x = 383,439,291,012.56/280,172.25
  6. Step 6: Final answer
    x = 1,368,584.12

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.