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Finding the Fourth Proportional to 394,345.39, 544,196.87 and 213,057.27

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Solution

The fourth proportional to 394,345.39, 544,196.87 and 213,057.27 is: 294,019.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,345.39 : 544,196.87 = 213,057.27 : x
  2. Step 2: Convert to fraction form
    394,345.39/544,196.87 = 213,057.27/x
  3. Step 3: Cross multiply
    394,345.39x = 544,196.87 × 213,057.27
  4. Step 4: Simplify right side
    394,345.39x = 115,945,099,464.75
  5. Step 5: Solve for x
    x = 115,945,099,464.75/394,345.39
  6. Step 6: Final answer
    x = 294,019.16

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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.