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Finding the Fourth Proportional to 394,740.85, 544,745.65 and 217,936.96

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Solution

The fourth proportional to 394,740.85, 544,745.65 and 217,936.96 is: 300,754.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,740.85 : 544,745.65 = 217,936.96 : x
  2. Step 2: Convert to fraction form
    394,740.85/544,745.65 = 217,936.96/x
  3. Step 3: Cross multiply
    394,740.85x = 544,745.65 × 217,936.96
  4. Step 4: Simplify right side
    394,740.85x = 118,720,208,482.68
  5. Step 5: Solve for x
    x = 118,720,208,482.68/394,740.85
  6. Step 6: Final answer
    x = 300,754.81

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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.