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Finding the Fourth Proportional to 478,793.05, 660,738.90 and 263,940.81

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Solution

The fourth proportional to 478,793.05, 660,738.90 and 263,940.81 is: 364,240.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,793.05 : 660,738.90 = 263,940.81 : x
  2. Step 2: Convert to fraction form
    478,793.05/660,738.90 = 263,940.81/x
  3. Step 3: Cross multiply
    478,793.05x = 660,738.90 × 263,940.81
  4. Step 4: Simplify right side
    478,793.05x = 174,395,958,976.52
  5. Step 5: Solve for x
    x = 174,395,958,976.52/478,793.05
  6. Step 6: Final answer
    x = 364,240.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.