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Finding the Fourth Proportional to 239,418.63, 330,399.95 and 131,992.47

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Solution

The fourth proportional to 239,418.63, 330,399.95 and 131,992.47 is: 182,150.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,418.63 : 330,399.95 = 131,992.47 : x
  2. Step 2: Convert to fraction form
    239,418.63/330,399.95 = 131,992.47/x
  3. Step 3: Cross multiply
    239,418.63x = 330,399.95 × 131,992.47
  4. Step 4: Simplify right side
    239,418.63x = 43,610,304,828.41
  5. Step 5: Solve for x
    x = 43,610,304,828.41/239,418.63
  6. Step 6: Final answer
    x = 182,150.84

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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.