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Finding the Fourth Proportional to 404,821.20, 607,620.60 and 205,366.80

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Solution

The fourth proportional to 404,821.20, 607,620.60 and 205,366.80 is: 308,247.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,821.20 : 607,620.60 = 205,366.80 : x
  2. Step 2: Convert to fraction form
    404,821.20/607,620.60 = 205,366.80/x
  3. Step 3: Cross multiply
    404,821.20x = 607,620.60 × 205,366.80
  4. Step 4: Simplify right side
    404,821.20x = 124,785,098,236.08
  5. Step 5: Solve for x
    x = 124,785,098,236.08/404,821.20
  6. Step 6: Final answer
    x = 308,247.44

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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.