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Finding the Fourth Proportional to 398,245.37, 597,146.61 and 131,860.56

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Solution

The fourth proportional to 398,245.37, 597,146.61 and 131,860.56 is: 197,717.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,245.37 : 597,146.61 = 131,860.56 : x
  2. Step 2: Convert to fraction form
    398,245.37/597,146.61 = 131,860.56/x
  3. Step 3: Cross multiply
    398,245.37x = 597,146.61 × 131,860.56
  4. Step 4: Simplify right side
    398,245.37x = 78,740,086,396.70
  5. Step 5: Solve for x
    x = 78,740,086,396.70/398,245.37
  6. Step 6: Final answer
    x = 197,717.52

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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.