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Finding the Fourth Proportional to 331,074.60, 496,611.90 and 198,364.20

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Solution

The fourth proportional to 331,074.60, 496,611.90 and 198,364.20 is: 297,546.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,074.60 : 496,611.90 = 198,364.20 : x
  2. Step 2: Convert to fraction form
    331,074.60/496,611.90 = 198,364.20/x
  3. Step 3: Cross multiply
    331,074.60x = 496,611.90 × 198,364.20
  4. Step 4: Simplify right side
    331,074.60x = 98,510,022,253.98
  5. Step 5: Solve for x
    x = 98,510,022,253.98/331,074.60
  6. Step 6: Final answer
    x = 297,546.30

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1.5x scale

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.