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Finding the Fourth Proportional to 422,793.18, 583,481.61 and 279,301.68

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Solution

The fourth proportional to 422,793.18, 583,481.61 and 279,301.68 is: 385,454.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,793.18 : 583,481.61 = 279,301.68 : x
  2. Step 2: Convert to fraction form
    422,793.18/583,481.61 = 279,301.68/x
  3. Step 3: Cross multiply
    422,793.18x = 583,481.61 × 279,301.68
  4. Step 4: Simplify right side
    422,793.18x = 162,967,393,922.11
  5. Step 5: Solve for x
    x = 162,967,393,922.11/422,793.18
  6. Step 6: Final answer
    x = 385,454.17

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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.