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Finding the Fourth Proportional to 381,296.43, 526,189.68 and 211,530.51

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Solution

The fourth proportional to 381,296.43, 526,189.68 and 211,530.51 is: 291,912.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,296.43 : 526,189.68 = 211,530.51 : x
  2. Step 2: Convert to fraction form
    381,296.43/526,189.68 = 211,530.51/x
  3. Step 3: Cross multiply
    381,296.43x = 526,189.68 × 211,530.51
  4. Step 4: Simplify right side
    381,296.43x = 111,305,171,367.14
  5. Step 5: Solve for x
    x = 111,305,171,367.14/381,296.43
  6. Step 6: Final answer
    x = 291,912.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.