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Finding the Fourth Proportional to 238,859.80, 329,618.28 and 131,419.78

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Solution

The fourth proportional to 238,859.80, 329,618.28 and 131,419.78 is: 181,354.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,859.80 : 329,618.28 = 131,419.78 : x
  2. Step 2: Convert to fraction form
    238,859.80/329,618.28 = 131,419.78/x
  3. Step 3: Cross multiply
    238,859.80x = 329,618.28 × 131,419.78
  4. Step 4: Simplify right side
    238,859.80x = 43,318,361,841.58
  5. Step 5: Solve for x
    x = 43,318,361,841.58/238,859.80
  6. Step 6: Final answer
    x = 181,354.76

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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.