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Finding the Fourth Proportional to 394,244.28, 544,057.32 and 212,956.21

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Solution

The fourth proportional to 394,244.28, 544,057.32 and 212,956.21 is: 293,879.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,244.28 : 544,057.32 = 212,956.21 : x
  2. Step 2: Convert to fraction form
    394,244.28/544,057.32 = 212,956.21/x
  3. Step 3: Cross multiply
    394,244.28x = 544,057.32 × 212,956.21
  4. Step 4: Simplify right side
    394,244.28x = 115,860,384,889.96
  5. Step 5: Solve for x
    x = 115,860,384,889.96/394,244.28
  6. Step 6: Final answer
    x = 293,879.69

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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.