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Finding the Fourth Proportional to 197,121.60, 295,617.60 and 72,446.40

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Solution

The fourth proportional to 197,121.60, 295,617.60 and 72,446.40 is: 108,645.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,121.60 : 295,617.60 = 72,446.40 : x
  2. Step 2: Convert to fraction form
    197,121.60/295,617.60 = 72,446.40/x
  3. Step 3: Cross multiply
    197,121.60x = 295,617.60 × 72,446.40
  4. Step 4: Simplify right side
    197,121.60x = 21,416,430,896.64
  5. Step 5: Solve for x
    x = 21,416,430,896.64/197,121.60
  6. Step 6: Final answer
    x = 108,645.78

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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.