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Finding the Fourth Proportional to 202,608.40, 303,475.20 and 131,749.60

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Solution

The fourth proportional to 202,608.40, 303,475.20 and 131,749.60 is: 197,339.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,608.40 : 303,475.20 = 131,749.60 : x
  2. Step 2: Convert to fraction form
    202,608.40/303,475.20 = 131,749.60/x
  3. Step 3: Cross multiply
    202,608.40x = 303,475.20 × 131,749.60
  4. Step 4: Simplify right side
    202,608.40x = 39,982,736,209.92
  5. Step 5: Solve for x
    x = 39,982,736,209.92/202,608.40
  6. Step 6: Final answer
    x = 197,339.97

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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.