Home / 394,979.04-545,069.58-213,690.38

Finding the Fourth Proportional to 394,979.04, 545,069.58 and 213,690.38

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Solution

The fourth proportional to 394,979.04, 545,069.58 and 213,690.38 is: 294,891.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,979.04 : 545,069.58 = 213,690.38 : x
  2. Step 2: Convert to fraction form
    394,979.04/545,069.58 = 213,690.38/x
  3. Step 3: Cross multiply
    394,979.04x = 545,069.58 × 213,690.38
  4. Step 4: Simplify right side
    394,979.04x = 116,476,125,676.64
  5. Step 5: Solve for x
    x = 116,476,125,676.64/394,979.04
  6. Step 6: Final answer
    x = 294,891.92

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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.