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Finding the Fourth Proportional to 394,980.04, 545,070.96 and 213,691.38

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Solution

The fourth proportional to 394,980.04, 545,070.96 and 213,691.38 is: 294,893.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,980.04 : 545,070.96 = 213,691.38 : x
  2. Step 2: Convert to fraction form
    394,980.04/545,070.96 = 213,691.38/x
  3. Step 3: Cross multiply
    394,980.04x = 545,070.96 × 213,691.38
  4. Step 4: Simplify right side
    394,980.04x = 116,476,965,640.33
  5. Step 5: Solve for x
    x = 116,476,965,640.33/394,980.04
  6. Step 6: Final answer
    x = 294,893.30

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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.