Home / 389,921.75-538,093.46-211,073.75

Finding the Fourth Proportional to 389,921.75, 538,093.46 and 211,073.75

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Solution

The fourth proportional to 389,921.75, 538,093.46 and 211,073.75 is: 291,282.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,921.75 : 538,093.46 = 211,073.75 : x
  2. Step 2: Convert to fraction form
    389,921.75/538,093.46 = 211,073.75/x
  3. Step 3: Cross multiply
    389,921.75x = 538,093.46 × 211,073.75
  4. Step 4: Simplify right side
    389,921.75x = 113,577,404,452.68
  5. Step 5: Solve for x
    x = 113,577,404,452.68/389,921.75
  6. Step 6: Final answer
    x = 291,282.56

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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.