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Finding the Fourth Proportional to 227,108.10, 340,662.15 and 138,315.90

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Solution

The fourth proportional to 227,108.10, 340,662.15 and 138,315.90 is: 207,473.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,108.10 : 340,662.15 = 138,315.90 : x
  2. Step 2: Convert to fraction form
    227,108.10/340,662.15 = 138,315.90/x
  3. Step 3: Cross multiply
    227,108.10x = 340,662.15 × 138,315.90
  4. Step 4: Simplify right side
    227,108.10x = 47,118,991,873.19
  5. Step 5: Solve for x
    x = 47,118,991,873.19/227,108.10
  6. Step 6: Final answer
    x = 207,473.85

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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.