Home / 664,529.20-996,939.60-215,173.60

Finding the Fourth Proportional to 664,529.20, 996,939.60 and 215,173.60

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Solution

The fourth proportional to 664,529.20, 996,939.60 and 215,173.60 is: 322,807.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,529.20 : 996,939.60 = 215,173.60 : x
  2. Step 2: Convert to fraction form
    664,529.20/996,939.60 = 215,173.60/x
  3. Step 3: Cross multiply
    664,529.20x = 996,939.60 × 215,173.60
  4. Step 4: Simplify right side
    664,529.20x = 214,515,082,714.56
  5. Step 5: Solve for x
    x = 214,515,082,714.56/664,529.20
  6. Step 6: Final answer
    x = 322,807.61

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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.