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Finding the Fourth Proportional to 394,245.22, 544,058.61 and 212,957.15

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Solution

The fourth proportional to 394,245.22, 544,058.61 and 212,957.15 is: 293,880.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,245.22 : 544,058.61 = 212,957.15 : x
  2. Step 2: Convert to fraction form
    394,245.22/544,058.61 = 212,957.15/x
  3. Step 3: Cross multiply
    394,245.22x = 544,058.61 × 212,957.15
  4. Step 4: Simplify right side
    394,245.22x = 115,861,168,298.27
  5. Step 5: Solve for x
    x = 115,861,168,298.27/394,245.22
  6. Step 6: Final answer
    x = 293,880.97

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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.