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Finding the Fourth Proportional to 331,311.60, 496,432.80 and 299,818.80

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Solution

The fourth proportional to 331,311.60, 496,432.80 and 299,818.80 is: 449,244.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,311.60 : 496,432.80 = 299,818.80 : x
  2. Step 2: Convert to fraction form
    331,311.60/496,432.80 = 299,818.80/x
  3. Step 3: Cross multiply
    331,311.60x = 496,432.80 × 299,818.80
  4. Step 4: Simplify right side
    331,311.60x = 148,839,886,376.64
  5. Step 5: Solve for x
    x = 148,839,886,376.64/331,311.60
  6. Step 6: Final answer
    x = 449,244.42

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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.