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Finding the Fourth Proportional to 399,662.92, 551,528.42 and 218,370.92

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Solution

The fourth proportional to 399,662.92, 551,528.42 and 218,370.92 is: 301,348.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,662.92 : 551,528.42 = 218,370.92 : x
  2. Step 2: Convert to fraction form
    399,662.92/551,528.42 = 218,370.92/x
  3. Step 3: Cross multiply
    399,662.92x = 551,528.42 × 218,370.92
  4. Step 4: Simplify right side
    399,662.92x = 120,437,768,481.55
  5. Step 5: Solve for x
    x = 120,437,768,481.55/399,662.92
  6. Step 6: Final answer
    x = 301,348.37

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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.