Home / 279,039.87-418,550.42-121,268.34

Finding the Fourth Proportional to 279,039.87, 418,550.42 and 121,268.34

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Solution

The fourth proportional to 279,039.87, 418,550.42 and 121,268.34 is: 181,898.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,039.87 : 418,550.42 = 121,268.34 : x
  2. Step 2: Convert to fraction form
    279,039.87/418,550.42 = 121,268.34/x
  3. Step 3: Cross multiply
    279,039.87x = 418,550.42 × 121,268.34
  4. Step 4: Simplify right side
    279,039.87x = 50,756,914,942.87
  5. Step 5: Solve for x
    x = 50,756,914,942.87/279,039.87
  6. Step 6: Final answer
    x = 181,898.43

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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.