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Finding the Fourth Proportional to 445,485.63, 667,933.27 and 161,138.76

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Solution

The fourth proportional to 445,485.63, 667,933.27 and 161,138.76 is: 241,601.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,485.63 : 667,933.27 = 161,138.76 : x
  2. Step 2: Convert to fraction form
    445,485.63/667,933.27 = 161,138.76/x
  3. Step 3: Cross multiply
    445,485.63x = 667,933.27 × 161,138.76
  4. Step 4: Simplify right side
    445,485.63x = 107,629,938,890.55
  5. Step 5: Solve for x
    x = 107,629,938,890.55/445,485.63
  6. Step 6: Final answer
    x = 241,601.37

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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.