Home / 278,880.20-419,195.10-273,631.40

Finding the Fourth Proportional to 278,880.20, 419,195.10 and 273,631.40

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Solution

The fourth proportional to 278,880.20, 419,195.10 and 273,631.40 is: 411,305.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,880.20 : 419,195.10 = 273,631.40 : x
  2. Step 2: Convert to fraction form
    278,880.20/419,195.10 = 273,631.40/x
  3. Step 3: Cross multiply
    278,880.20x = 419,195.10 × 273,631.40
  4. Step 4: Simplify right side
    278,880.20x = 114,704,942,086.14
  5. Step 5: Solve for x
    x = 114,704,942,086.14/278,880.20
  6. Step 6: Final answer
    x = 411,305.44

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1.5x scale

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.