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Finding the Fourth Proportional to 486,198.64, 670,766.83 and 304,594.21

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Solution

The fourth proportional to 486,198.64, 670,766.83 and 304,594.21 is: 420,222.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,198.64 : 670,766.83 = 304,594.21 : x
  2. Step 2: Convert to fraction form
    486,198.64/670,766.83 = 304,594.21/x
  3. Step 3: Cross multiply
    486,198.64x = 670,766.83 × 304,594.21
  4. Step 4: Simplify right side
    486,198.64x = 204,311,692,678.05
  5. Step 5: Solve for x
    x = 204,311,692,678.05/486,198.64
  6. Step 6: Final answer
    x = 420,222.67

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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.