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Finding the Fourth Proportional to 448,758.25, 673,132.21 and 128,917.97

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Solution

The fourth proportional to 448,758.25, 673,132.21 and 128,917.97 is: 193,375.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,758.25 : 673,132.21 = 128,917.97 : x
  2. Step 2: Convert to fraction form
    448,758.25/673,132.21 = 128,917.97/x
  3. Step 3: Cross multiply
    448,758.25x = 673,132.21 × 128,917.97
  4. Step 4: Simplify right side
    448,758.25x = 86,778,836,891.10
  5. Step 5: Solve for x
    x = 86,778,836,891.10/448,758.25
  6. Step 6: Final answer
    x = 193,375.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.