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Finding the Fourth Proportional to 238,716.78, 329,422.59 and 131,286.78

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Solution

The fourth proportional to 238,716.78, 329,422.59 and 131,286.78 is: 181,172.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,716.78 : 329,422.59 = 131,286.78 : x
  2. Step 2: Convert to fraction form
    238,716.78/329,422.59 = 131,286.78/x
  3. Step 3: Cross multiply
    238,716.78x = 329,422.59 × 131,286.78
  4. Step 4: Simplify right side
    238,716.78x = 43,248,831,100.36
  5. Step 5: Solve for x
    x = 43,248,831,100.36/238,716.78
  6. Step 6: Final answer
    x = 181,172.15

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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.