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Finding the Fourth Proportional to 664,339.20, 996,217.20 and 264,847.20

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Solution

The fourth proportional to 664,339.20, 996,217.20 and 264,847.20 is: 397,154.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,339.20 : 996,217.20 = 264,847.20 : x
  2. Step 2: Convert to fraction form
    664,339.20/996,217.20 = 264,847.20/x
  3. Step 3: Cross multiply
    664,339.20x = 996,217.20 × 264,847.20
  4. Step 4: Simplify right side
    664,339.20x = 263,845,336,011.84
  5. Step 5: Solve for x
    x = 263,845,336,011.84/664,339.20
  6. Step 6: Final answer
    x = 397,154.55

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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.