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Finding the Fourth Proportional to 366,979,403.90, 550,469,105.85 and 203,720,728.70

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Solution

The fourth proportional to 366,979,403.90, 550,469,105.85 and 203,720,728.70 is: 305,581,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,979,403.90 : 550,469,105.85 = 203,720,728.70 : x
  2. Step 2: Convert to fraction form
    366,979,403.90/550,469,105.85 = 203,720,728.70/x
  3. Step 3: Cross multiply
    366,979,403.90x = 550,469,105.85 × 203,720,728.70
  4. Step 4: Simplify right side
    366,979,403.90x = 112,141,967,370,599,424
  5. Step 5: Solve for x
    x = 112,141,967,370,599,424/366,979,403.90
  6. Step 6: Final answer
    x = 305,581,093.05

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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.