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Finding the Fourth Proportional to 223,888.80, 336,016.80 and 222,139.20

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Solution

The fourth proportional to 223,888.80, 336,016.80 and 222,139.20 is: 333,390.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,888.80 : 336,016.80 = 222,139.20 : x
  2. Step 2: Convert to fraction form
    223,888.80/336,016.80 = 222,139.20/x
  3. Step 3: Cross multiply
    223,888.80x = 336,016.80 × 222,139.20
  4. Step 4: Simplify right side
    223,888.80x = 74,642,503,138.56
  5. Step 5: Solve for x
    x = 74,642,503,138.56/223,888.80
  6. Step 6: Final answer
    x = 333,390.97

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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.