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Finding the Fourth Proportional to 238,858.80, 329,616.91 and 131,418.78

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Solution

The fourth proportional to 238,858.80, 329,616.91 and 131,418.78 is: 181,353.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,858.80 : 329,616.91 = 131,418.78 : x
  2. Step 2: Convert to fraction form
    238,858.80/329,616.91 = 131,418.78/x
  3. Step 3: Cross multiply
    238,858.80x = 329,616.91 × 131,418.78
  4. Step 4: Simplify right side
    238,858.80x = 43,317,852,179.57
  5. Step 5: Solve for x
    x = 43,317,852,179.57/238,858.80
  6. Step 6: Final answer
    x = 181,353.39

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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.