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Finding the Fourth Proportional to 297,631.20, 446,446.80 and 100,639.20

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Solution

The fourth proportional to 297,631.20, 446,446.80 and 100,639.20 is: 150,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,631.20 : 446,446.80 = 100,639.20 : x
  2. Step 2: Convert to fraction form
    297,631.20/446,446.80 = 100,639.20/x
  3. Step 3: Cross multiply
    297,631.20x = 446,446.80 × 100,639.20
  4. Step 4: Simplify right side
    297,631.20x = 44,930,048,794.56
  5. Step 5: Solve for x
    x = 44,930,048,794.56/297,631.20
  6. Step 6: Final answer
    x = 150,958.80

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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.