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Finding the Fourth Proportional to 422,290.18, 582,539.61 and 261,093.70

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Solution

The fourth proportional to 422,290.18, 582,539.61 and 261,093.70 is: 360,172.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,290.18 : 582,539.61 = 261,093.70 : x
  2. Step 2: Convert to fraction form
    422,290.18/582,539.61 = 261,093.70/x
  3. Step 3: Cross multiply
    422,290.18x = 582,539.61 × 261,093.70
  4. Step 4: Simplify right side
    422,290.18x = 152,097,422,171.46
  5. Step 5: Solve for x
    x = 152,097,422,171.46/422,290.18
  6. Step 6: Final answer
    x = 360,172.77

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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.