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Finding the Fourth Proportional to 422,864.48, 634,138.67 and 170,059.57

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Solution

The fourth proportional to 422,864.48, 634,138.67 and 170,059.57 is: 255,025.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,864.48 : 634,138.67 = 170,059.57 : x
  2. Step 2: Convert to fraction form
    422,864.48/634,138.67 = 170,059.57/x
  3. Step 3: Cross multiply
    422,864.48x = 634,138.67 × 170,059.57
  4. Step 4: Simplify right side
    422,864.48x = 107,841,348,380.37
  5. Step 5: Solve for x
    x = 107,841,348,380.37/422,864.48
  6. Step 6: Final answer
    x = 255,025.79

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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.