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Finding the Fourth Proportional to 252,168.84, 378,200.88 and 74,634.21

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Solution

The fourth proportional to 252,168.84, 378,200.88 and 74,634.21 is: 111,935.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,168.84 : 378,200.88 = 74,634.21 : x
  2. Step 2: Convert to fraction form
    252,168.84/378,200.88 = 74,634.21/x
  3. Step 3: Cross multiply
    252,168.84x = 378,200.88 × 74,634.21
  4. Step 4: Simplify right side
    252,168.84x = 28,226,723,900.10
  5. Step 5: Solve for x
    x = 28,226,723,900.10/252,168.84
  6. Step 6: Final answer
    x = 111,935.81

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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.