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Finding the Fourth Proportional to 449,468.28, 673,735.86 and 212,630.76

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Solution

The fourth proportional to 449,468.28, 673,735.86 and 212,630.76 is: 318,725.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,468.28 : 673,735.86 = 212,630.76 : x
  2. Step 2: Convert to fraction form
    449,468.28/673,735.86 = 212,630.76/x
  3. Step 3: Cross multiply
    449,468.28x = 673,735.86 × 212,630.76
  4. Step 4: Simplify right side
    449,468.28x = 143,256,967,951.05
  5. Step 5: Solve for x
    x = 143,256,967,951.05/449,468.28
  6. Step 6: Final answer
    x = 318,725.42

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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.