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Finding the Fourth Proportional to 394,841.61, 544,879.80 and 213,553.74

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Solution

The fourth proportional to 394,841.61, 544,879.80 and 213,553.74 is: 294,703.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,841.61 : 544,879.80 = 213,553.74 : x
  2. Step 2: Convert to fraction form
    394,841.61/544,879.80 = 213,553.74/x
  3. Step 3: Cross multiply
    394,841.61x = 544,879.80 × 213,553.74
  4. Step 4: Simplify right side
    394,841.61x = 116,361,119,140.45
  5. Step 5: Solve for x
    x = 116,361,119,140.45/394,841.61
  6. Step 6: Final answer
    x = 294,703.28

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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.