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Finding the Fourth Proportional to 222,405.70, 333,608.55 and 211,519.30

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Solution

The fourth proportional to 222,405.70, 333,608.55 and 211,519.30 is: 317,278.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,405.70 : 333,608.55 = 211,519.30 : x
  2. Step 2: Convert to fraction form
    222,405.70/333,608.55 = 211,519.30/x
  3. Step 3: Cross multiply
    222,405.70x = 333,608.55 × 211,519.30
  4. Step 4: Simplify right side
    222,405.70x = 70,564,646,970.02
  5. Step 5: Solve for x
    x = 70,564,646,970.02/222,405.70
  6. Step 6: Final answer
    x = 317,278.95

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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.