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Finding the Fourth Proportional to 331,418.88, 457,371 and 188,192.34

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Solution

The fourth proportional to 331,418.88, 457,371 and 188,192.34 is: 259,712.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,418.88 : 457,371 = 188,192.34 : x
  2. Step 2: Convert to fraction form
    331,418.88/457,371 = 188,192.34/x
  3. Step 3: Cross multiply
    331,418.88x = 457,371 × 188,192.34
  4. Step 4: Simplify right side
    331,418.88x = 86,073,718,738.14
  5. Step 5: Solve for x
    x = 86,073,718,738.14/331,418.88
  6. Step 6: Final answer
    x = 259,712.78

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1.5x scale

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.