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Finding the Fourth Proportional to 394,786.92, 544,166.08 and 308,593.60

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Solution

The fourth proportional to 394,786.92, 544,166.08 and 308,593.60 is: 425,359.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,786.92 : 544,166.08 = 308,593.60 : x
  2. Step 2: Convert to fraction form
    394,786.92/544,166.08 = 308,593.60/x
  3. Step 3: Cross multiply
    394,786.92x = 544,166.08 × 308,593.60
  4. Step 4: Simplify right side
    394,786.92x = 167,926,169,625.09
  5. Step 5: Solve for x
    x = 167,926,169,625.09/394,786.92
  6. Step 6: Final answer
    x = 425,359.00

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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.