Home / 278,868.41-418,067.53-120,977.81

Finding the Fourth Proportional to 278,868.41, 418,067.53 and 120,977.81

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Solution

The fourth proportional to 278,868.41, 418,067.53 and 120,977.81 is: 181,364.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,868.41 : 418,067.53 = 120,977.81 : x
  2. Step 2: Convert to fraction form
    278,868.41/418,067.53 = 120,977.81/x
  3. Step 3: Cross multiply
    278,868.41x = 418,067.53 × 120,977.81
  4. Step 4: Simplify right side
    278,868.41x = 50,576,894,211.51
  5. Step 5: Solve for x
    x = 50,576,894,211.51/278,868.41
  6. Step 6: Final answer
    x = 181,364.73

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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.