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Finding the Fourth Proportional to 227,321.78, 340,539.80 and 138,354.62

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Solution

The fourth proportional to 227,321.78, 340,539.80 and 138,354.62 is: 207,262.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,321.78 : 340,539.80 = 138,354.62 : x
  2. Step 2: Convert to fraction form
    227,321.78/340,539.80 = 138,354.62/x
  3. Step 3: Cross multiply
    227,321.78x = 340,539.80 × 138,354.62
  4. Step 4: Simplify right side
    227,321.78x = 47,115,252,229.40
  5. Step 5: Solve for x
    x = 47,115,252,229.40/227,321.78
  6. Step 6: Final answer
    x = 207,262.38

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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.