Home / 217,669.62-300,367.60-122,157.86

Finding the Fourth Proportional to 217,669.62, 300,367.60 and 122,157.86

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Solution

The fourth proportional to 217,669.62, 300,367.60 and 122,157.86 is: 168,568.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,669.62 : 300,367.60 = 122,157.86 : x
  2. Step 2: Convert to fraction form
    217,669.62/300,367.60 = 122,157.86/x
  3. Step 3: Cross multiply
    217,669.62x = 300,367.60 × 122,157.86
  4. Step 4: Simplify right side
    217,669.62x = 36,692,263,229.34
  5. Step 5: Solve for x
    x = 36,692,263,229.34/217,669.62
  6. Step 6: Final answer
    x = 168,568.60

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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.