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Finding the Fourth Proportional to 223,739.80, 335,793.30 and 221,990.20

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Solution

The fourth proportional to 223,739.80, 335,793.30 and 221,990.20 is: 333,167.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,739.80 : 335,793.30 = 221,990.20 : x
  2. Step 2: Convert to fraction form
    223,739.80/335,793.30 = 221,990.20/x
  3. Step 3: Cross multiply
    223,739.80x = 335,793.30 × 221,990.20
  4. Step 4: Simplify right side
    223,739.80x = 74,542,821,825.66
  5. Step 5: Solve for x
    x = 74,542,821,825.66/223,739.80
  6. Step 6: Final answer
    x = 333,167.46

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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.