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Finding the Fourth Proportional to 394,826.45, 544,860.47 and 213,538.37

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Solution

The fourth proportional to 394,826.45, 544,860.47 and 213,538.37 is: 294,682.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,826.45 : 544,860.47 = 213,538.37 : x
  2. Step 2: Convert to fraction form
    394,826.45/544,860.47 = 213,538.37/x
  3. Step 3: Cross multiply
    394,826.45x = 544,860.47 × 213,538.37
  4. Step 4: Simplify right side
    394,826.45x = 116,348,615,573.54
  5. Step 5: Solve for x
    x = 116,348,615,573.54/394,826.45
  6. Step 6: Final answer
    x = 294,682.93

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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.