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Finding the Fourth Proportional to 300,793.20, 451,189.80 and 186,631.80

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Solution

The fourth proportional to 300,793.20, 451,189.80 and 186,631.80 is: 279,947.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,793.20 : 451,189.80 = 186,631.80 : x
  2. Step 2: Convert to fraction form
    300,793.20/451,189.80 = 186,631.80/x
  3. Step 3: Cross multiply
    300,793.20x = 451,189.80 × 186,631.80
  4. Step 4: Simplify right side
    300,793.20x = 84,206,364,515.64
  5. Step 5: Solve for x
    x = 84,206,364,515.64/300,793.20
  6. Step 6: Final answer
    x = 279,947.70

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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.