Home / 331,286.42-457,278.45-188,141.78

Finding the Fourth Proportional to 331,286.42, 457,278.45 and 188,141.78

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Solution

The fourth proportional to 331,286.42, 457,278.45 and 188,141.78 is: 259,694.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,286.42 : 457,278.45 = 188,141.78 : x
  2. Step 2: Convert to fraction form
    331,286.42/457,278.45 = 188,141.78/x
  3. Step 3: Cross multiply
    331,286.42x = 457,278.45 × 188,141.78
  4. Step 4: Simplify right side
    331,286.42x = 86,033,181,538.64
  5. Step 5: Solve for x
    x = 86,033,181,538.64/331,286.42
  6. Step 6: Final answer
    x = 259,694.26

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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.