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Finding the Fourth Proportional to 445,645.44, 668,466.72 and 113,221.44

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Solution

The fourth proportional to 445,645.44, 668,466.72 and 113,221.44 is: 169,831.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,645.44 : 668,466.72 = 113,221.44 : x
  2. Step 2: Convert to fraction form
    445,645.44/668,466.72 = 113,221.44/x
  3. Step 3: Cross multiply
    445,645.44x = 668,466.72 × 113,221.44
  4. Step 4: Simplify right side
    445,645.44x = 75,684,764,630.48
  5. Step 5: Solve for x
    x = 75,684,764,630.48/445,645.44
  6. Step 6: Final answer
    x = 169,831.79

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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.