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Finding the Fourth Proportional to 271,815.20, 406,410.60 and 200,956.40

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Solution

The fourth proportional to 271,815.20, 406,410.60 and 200,956.40 is: 300,464.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,815.20 : 406,410.60 = 200,956.40 : x
  2. Step 2: Convert to fraction form
    271,815.20/406,410.60 = 200,956.40/x
  3. Step 3: Cross multiply
    271,815.20x = 406,410.60 × 200,956.40
  4. Step 4: Simplify right side
    271,815.20x = 81,670,811,097.84
  5. Step 5: Solve for x
    x = 81,670,811,097.84/271,815.20
  6. Step 6: Final answer
    x = 300,464.47

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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.