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Finding the Fourth Proportional to 255,651.88, 352,800.69 and 140,928.05

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Solution

The fourth proportional to 255,651.88, 352,800.69 and 140,928.05 is: 194,481.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,651.88 : 352,800.69 = 140,928.05 : x
  2. Step 2: Convert to fraction form
    255,651.88/352,800.69 = 140,928.05/x
  3. Step 3: Cross multiply
    255,651.88x = 352,800.69 × 140,928.05
  4. Step 4: Simplify right side
    255,651.88x = 49,719,511,516.35
  5. Step 5: Solve for x
    x = 49,719,511,516.35/255,651.88
  6. Step 6: Final answer
    x = 194,481.31

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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.