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Finding the Fourth Proportional to 198,812.22, 274,368.41 and 113,945.66

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Solution

The fourth proportional to 198,812.22, 274,368.41 and 113,945.66 is: 157,249.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,812.22 : 274,368.41 = 113,945.66 : x
  2. Step 2: Convert to fraction form
    198,812.22/274,368.41 = 113,945.66/x
  3. Step 3: Cross multiply
    198,812.22x = 274,368.41 × 113,945.66
  4. Step 4: Simplify right side
    198,812.22x = 31,263,089,560.60
  5. Step 5: Solve for x
    x = 31,263,089,560.60/198,812.22
  6. Step 6: Final answer
    x = 157,249.34

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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.