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Finding the Fourth Proportional to 394,784.91, 544,163.33 and 308,591.60

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Solution

The fourth proportional to 394,784.91, 544,163.33 and 308,591.60 is: 425,356.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,784.91 : 544,163.33 = 308,591.60 : x
  2. Step 2: Convert to fraction form
    394,784.91/544,163.33 = 308,591.60/x
  3. Step 3: Cross multiply
    394,784.91x = 544,163.33 × 308,591.60
  4. Step 4: Simplify right side
    394,784.91x = 167,924,230,716.69
  5. Step 5: Solve for x
    x = 167,924,230,716.69/394,784.91
  6. Step 6: Final answer
    x = 425,356.25

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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.