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Finding the Fourth Proportional to 394,581.90, 544,525.56 and 213,293.64

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Solution

The fourth proportional to 394,581.90, 544,525.56 and 213,293.64 is: 294,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,581.90 : 544,525.56 = 213,293.64 : x
  2. Step 2: Convert to fraction form
    394,581.90/544,525.56 = 213,293.64/x
  3. Step 3: Cross multiply
    394,581.90x = 544,525.56 × 213,293.64
  4. Step 4: Simplify right side
    394,581.90x = 116,143,838,765.44
  5. Step 5: Solve for x
    x = 116,143,838,765.44/394,581.90
  6. Step 6: Final answer
    x = 294,346.60

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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.