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Finding the Fourth Proportional to 306,394.45, 459,591.73 and 81,755.73

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Solution

The fourth proportional to 306,394.45, 459,591.73 and 81,755.73 is: 122,633.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,394.45 : 459,591.73 = 81,755.73 : x
  2. Step 2: Convert to fraction form
    306,394.45/459,591.73 = 81,755.73/x
  3. Step 3: Cross multiply
    306,394.45x = 459,591.73 × 81,755.73
  4. Step 4: Simplify right side
    306,394.45x = 37,574,257,183.72
  5. Step 5: Solve for x
    x = 37,574,257,183.72/306,394.45
  6. Step 6: Final answer
    x = 122,633.61

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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.