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Finding the Fourth Proportional to 381,126.82, 525,993.33 and 211,392.94

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Solution

The fourth proportional to 381,126.82, 525,993.33 and 211,392.94 is: 291,743.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,126.82 : 525,993.33 = 211,392.94 : x
  2. Step 2: Convert to fraction form
    381,126.82/525,993.33 = 211,392.94/x
  3. Step 3: Cross multiply
    381,126.82x = 525,993.33 × 211,392.94
  4. Step 4: Simplify right side
    381,126.82x = 111,191,276,449.09
  5. Step 5: Solve for x
    x = 111,191,276,449.09/381,126.82
  6. Step 6: Final answer
    x = 291,743.51

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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.