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Finding the Fourth Proportional to 258,361.11, 356,550.20 and 143,651.42

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Solution

The fourth proportional to 258,361.11, 356,550.20 and 143,651.42 is: 198,245.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,361.11 : 356,550.20 = 143,651.42 : x
  2. Step 2: Convert to fraction form
    258,361.11/356,550.20 = 143,651.42/x
  3. Step 3: Cross multiply
    258,361.11x = 356,550.20 × 143,651.42
  4. Step 4: Simplify right side
    258,361.11x = 51,218,942,444.72
  5. Step 5: Solve for x
    x = 51,218,942,444.72/258,361.11
  6. Step 6: Final answer
    x = 198,245.56

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1.5x scale

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.