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Finding the Fourth Proportional to 263,128.88, 363,112.44 and 143,896.88

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Solution

The fourth proportional to 263,128.88, 363,112.44 and 143,896.88 is: 198,574.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,128.88 : 363,112.44 = 143,896.88 : x
  2. Step 2: Convert to fraction form
    263,128.88/363,112.44 = 143,896.88/x
  3. Step 3: Cross multiply
    263,128.88x = 363,112.44 × 143,896.88
  4. Step 4: Simplify right side
    263,128.88x = 52,250,747,205.19
  5. Step 5: Solve for x
    x = 52,250,747,205.19/263,128.88
  6. Step 6: Final answer
    x = 198,574.73

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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.