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Finding the Fourth Proportional to 202,640.52, 303,796.80 and 84,400.68

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Solution

The fourth proportional to 202,640.52, 303,796.80 and 84,400.68 is: 126,532.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,640.52 : 303,796.80 = 84,400.68 : x
  2. Step 2: Convert to fraction form
    202,640.52/303,796.80 = 84,400.68/x
  3. Step 3: Cross multiply
    202,640.52x = 303,796.80 × 84,400.68
  4. Step 4: Simplify right side
    202,640.52x = 25,640,656,501.82
  5. Step 5: Solve for x
    x = 25,640,656,501.82/202,640.52
  6. Step 6: Final answer
    x = 126,532.72

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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.