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Finding the Fourth Proportional to 422,789.61, 583,449.83 and 231,799.05

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Solution

The fourth proportional to 422,789.61, 583,449.83 and 231,799.05 is: 319,882.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,789.61 : 583,449.83 = 231,799.05 : x
  2. Step 2: Convert to fraction form
    422,789.61/583,449.83 = 231,799.05/x
  3. Step 3: Cross multiply
    422,789.61x = 583,449.83 × 231,799.05
  4. Step 4: Simplify right side
    422,789.61x = 135,243,115,157.67
  5. Step 5: Solve for x
    x = 135,243,115,157.67/422,789.61
  6. Step 6: Final answer
    x = 319,882.78

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1.5x scale

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.