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Finding the Fourth Proportional to 263,122, 363,108.36 and 143,890

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Solution

The fourth proportional to 263,122, 363,108.36 and 143,890 is: 198,568.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,122 : 363,108.36 = 143,890 : x
  2. Step 2: Convert to fraction form
    263,122/363,108.36 = 143,890/x
  3. Step 3: Cross multiply
    263,122x = 363,108.36 × 143,890
  4. Step 4: Simplify right side
    263,122x = 52,247,661,920.40
  5. Step 5: Solve for x
    x = 52,247,661,920.40/263,122
  6. Step 6: Final answer
    x = 198,568.20

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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.