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Finding the Fourth Proportional to 223,361.70, 335,042.55 and 212,475.30

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Solution

The fourth proportional to 223,361.70, 335,042.55 and 212,475.30 is: 318,712.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,361.70 : 335,042.55 = 212,475.30 : x
  2. Step 2: Convert to fraction form
    223,361.70/335,042.55 = 212,475.30/x
  3. Step 3: Cross multiply
    223,361.70x = 335,042.55 × 212,475.30
  4. Step 4: Simplify right side
    223,361.70x = 71,188,266,324.02
  5. Step 5: Solve for x
    x = 71,188,266,324.02/223,361.70
  6. Step 6: Final answer
    x = 318,712.95

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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.