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Finding the Fourth Proportional to 386,855.52, 533,723.76 and 252,797.28

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Solution

The fourth proportional to 386,855.52, 533,723.76 and 252,797.28 is: 348,770.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,855.52 : 533,723.76 = 252,797.28 : x
  2. Step 2: Convert to fraction form
    386,855.52/533,723.76 = 252,797.28/x
  3. Step 3: Cross multiply
    386,855.52x = 533,723.76 × 252,797.28
  4. Step 4: Simplify right side
    386,855.52x = 134,923,914,799.37
  5. Step 5: Solve for x
    x = 134,923,914,799.37/386,855.52
  6. Step 6: Final answer
    x = 348,770.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.