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Finding the Fourth Proportional to 366,485.20, 505,755.24 and 223,251.28

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Solution

The fourth proportional to 366,485.20, 505,755.24 and 223,251.28 is: 308,090.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,485.20 : 505,755.24 = 223,251.28 : x
  2. Step 2: Convert to fraction form
    366,485.20/505,755.24 = 223,251.28/x
  3. Step 3: Cross multiply
    366,485.20x = 505,755.24 × 223,251.28
  4. Step 4: Simplify right side
    366,485.20x = 112,910,504,696.71
  5. Step 5: Solve for x
    x = 112,910,504,696.71/366,485.20
  6. Step 6: Final answer
    x = 308,090.22

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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.