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Finding the Fourth Proportional to 318,816.43, 477,699.75 and 222,763.39

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Solution

The fourth proportional to 318,816.43, 477,699.75 and 222,763.39 is: 333,778.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,816.43 : 477,699.75 = 222,763.39 : x
  2. Step 2: Convert to fraction form
    318,816.43/477,699.75 = 222,763.39/x
  3. Step 3: Cross multiply
    318,816.43x = 477,699.75 × 222,763.39
  4. Step 4: Simplify right side
    318,816.43x = 106,414,014,517.90
  5. Step 5: Solve for x
    x = 106,414,014,517.90/318,816.43
  6. Step 6: Final answer
    x = 333,778.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.