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Finding the Fourth Proportional to 226,650.71, 312,753.42 and 131,139.56

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Solution

The fourth proportional to 226,650.71, 312,753.42 and 131,139.56 is: 180,958.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,650.71 : 312,753.42 = 131,139.56 : x
  2. Step 2: Convert to fraction form
    226,650.71/312,753.42 = 131,139.56/x
  3. Step 3: Cross multiply
    226,650.71x = 312,753.42 × 131,139.56
  4. Step 4: Simplify right side
    226,650.71x = 41,014,346,669.18
  5. Step 5: Solve for x
    x = 41,014,346,669.18/226,650.71
  6. Step 6: Final answer
    x = 180,958.38

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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.