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Finding the Fourth Proportional to 664,378.62, 996,725.61 and 215,099.52

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Solution

The fourth proportional to 664,378.62, 996,725.61 and 215,099.52 is: 322,700.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,378.62 : 996,725.61 = 215,099.52 : x
  2. Step 2: Convert to fraction form
    664,378.62/996,725.61 = 215,099.52/x
  3. Step 3: Cross multiply
    664,378.62x = 996,725.61 × 215,099.52
  4. Step 4: Simplify right side
    664,378.62x = 214,395,200,282.71
  5. Step 5: Solve for x
    x = 214,395,200,282.71/664,378.62
  6. Step 6: Final answer
    x = 322,700.33

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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.