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Finding the Fourth Proportional to 367,821.91, 551,729.34 and 217,954.32

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Solution

The fourth proportional to 367,821.91, 551,729.34 and 217,954.32 is: 326,929.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,821.91 : 551,729.34 = 217,954.32 : x
  2. Step 2: Convert to fraction form
    367,821.91/551,729.34 = 217,954.32/x
  3. Step 3: Cross multiply
    367,821.91x = 551,729.34 × 217,954.32
  4. Step 4: Simplify right side
    367,821.91x = 120,251,793,123.75
  5. Step 5: Solve for x
    x = 120,251,793,123.75/367,821.91
  6. Step 6: Final answer
    x = 326,929.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.