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Finding the Third Proportional to 121,074.75 and 280,816.88

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Solution

The third proportional to 121,074.75 and 280,816.88 is: 651,317.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,074.75 : 280,816.88 = 280,816.88 : x
  2. Step 2: Convert to fraction form
    121,074.75/280,816.88 = 280,816.88/x
  3. Step 3: Cross multiply
    121,074.75x = 280,816.88 × 280,816.88
  4. Step 4: Simplify right side
    121,074.75x = 78,858,117,284.77
  5. Step 5: Solve for x
    x = 78,858,117,284.77/121,074.75
  6. Step 6: Final answer
    x = 651,317.61

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.