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Finding the Fourth Proportional to 330,867.84, 496,375.58 and 120,505.78

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Solution

The fourth proportional to 330,867.84, 496,375.58 and 120,505.78 is: 180,785.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,867.84 : 496,375.58 = 120,505.78 : x
  2. Step 2: Convert to fraction form
    330,867.84/496,375.58 = 120,505.78/x
  3. Step 3: Cross multiply
    330,867.84x = 496,375.58 × 120,505.78
  4. Step 4: Simplify right side
    330,867.84x = 59,816,126,684.74
  5. Step 5: Solve for x
    x = 59,816,126,684.74/330,867.84
  6. Step 6: Final answer
    x = 180,785.55

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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.