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Finding the Fourth Proportional to 399,794.60, 551,729.29 and 218,502.64

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Solution

The fourth proportional to 399,794.60, 551,729.29 and 218,502.64 is: 301,540.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,794.60 : 551,729.29 = 218,502.64 : x
  2. Step 2: Convert to fraction form
    399,794.60/551,729.29 = 218,502.64/x
  3. Step 3: Cross multiply
    399,794.60x = 551,729.29 × 218,502.64
  4. Step 4: Simplify right side
    399,794.60x = 120,554,304,410.49
  5. Step 5: Solve for x
    x = 120,554,304,410.49/399,794.60
  6. Step 6: Final answer
    x = 301,540.60

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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.