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Finding the Fourth Proportional to 330,873.74, 496,310.70 and 81,555.74

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Solution

The fourth proportional to 330,873.74, 496,310.70 and 81,555.74 is: 122,333.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,873.74 : 496,310.70 = 81,555.74 : x
  2. Step 2: Convert to fraction form
    330,873.74/496,310.70 = 81,555.74/x
  3. Step 3: Cross multiply
    330,873.74x = 496,310.70 × 81,555.74
  4. Step 4: Simplify right side
    330,873.74x = 40,476,985,635.11
  5. Step 5: Solve for x
    x = 40,476,985,635.11/330,873.74
  6. Step 6: Final answer
    x = 122,333.63

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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.