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Finding the Fourth Proportional to 203,287.78, 304,872.37 and 68,336.60

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Solution

The fourth proportional to 203,287.78, 304,872.37 and 68,336.60 is: 102,484.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,287.78 : 304,872.37 = 68,336.60 : x
  2. Step 2: Convert to fraction form
    203,287.78/304,872.37 = 68,336.60/x
  3. Step 3: Cross multiply
    203,287.78x = 304,872.37 × 68,336.60
  4. Step 4: Simplify right side
    203,287.78x = 20,833,939,789.13
  5. Step 5: Solve for x
    x = 20,833,939,789.13/203,287.78
  6. Step 6: Final answer
    x = 102,484.96

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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.