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Finding the Fourth Proportional to 394,199.08, 543,994.56 and 212,910.94

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Solution

The fourth proportional to 394,199.08, 543,994.56 and 212,910.94 is: 293,817.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,199.08 : 543,994.56 = 212,910.94 : x
  2. Step 2: Convert to fraction form
    394,199.08/543,994.56 = 212,910.94/x
  3. Step 3: Cross multiply
    394,199.08x = 543,994.56 × 212,910.94
  4. Step 4: Simplify right side
    394,199.08x = 115,822,393,124.49
  5. Step 5: Solve for x
    x = 115,822,393,124.49/394,199.08
  6. Step 6: Final answer
    x = 293,817.01

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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.