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Finding the Fourth Proportional to 278,846.40, 418,269.60 and 200,697.60

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Solution

The fourth proportional to 278,846.40, 418,269.60 and 200,697.60 is: 301,046.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,846.40 : 418,269.60 = 200,697.60 : x
  2. Step 2: Convert to fraction form
    278,846.40/418,269.60 = 200,697.60/x
  3. Step 3: Cross multiply
    278,846.40x = 418,269.60 × 200,697.60
  4. Step 4: Simplify right side
    278,846.40x = 83,945,704,872.96
  5. Step 5: Solve for x
    x = 83,945,704,872.96/278,846.40
  6. Step 6: Final answer
    x = 301,046.40

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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.