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Finding the Fourth Proportional to 442,856.70, 664,349.85 and 143,286.30

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Solution

The fourth proportional to 442,856.70, 664,349.85 and 143,286.30 is: 214,950.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,856.70 : 664,349.85 = 143,286.30 : x
  2. Step 2: Convert to fraction form
    442,856.70/664,349.85 = 143,286.30/x
  3. Step 3: Cross multiply
    442,856.70x = 664,349.85 × 143,286.30
  4. Step 4: Simplify right side
    442,856.70x = 95,192,231,912.06
  5. Step 5: Solve for x
    x = 95,192,231,912.06/442,856.70
  6. Step 6: Final answer
    x = 214,950.42

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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.