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Finding the Fourth Proportional to 361,639.30, 499,078.04 and 200,484.12

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Solution

The fourth proportional to 361,639.30, 499,078.04 and 200,484.12 is: 276,676.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,639.30 : 499,078.04 = 200,484.12 : x
  2. Step 2: Convert to fraction form
    361,639.30/499,078.04 = 200,484.12/x
  3. Step 3: Cross multiply
    361,639.30x = 499,078.04 × 200,484.12
  4. Step 4: Simplify right side
    361,639.30x = 100,057,221,660.73
  5. Step 5: Solve for x
    x = 100,057,221,660.73/361,639.30
  6. Step 6: Final answer
    x = 276,676.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.