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Finding the Fourth Proportional to 422,932.10, 634,250.60 and 170,147.03

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Solution

The fourth proportional to 422,932.10, 634,250.60 and 170,147.03 is: 255,161.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,932.10 : 634,250.60 = 170,147.03 : x
  2. Step 2: Convert to fraction form
    422,932.10/634,250.60 = 170,147.03/x
  3. Step 3: Cross multiply
    422,932.10x = 634,250.60 × 170,147.03
  4. Step 4: Simplify right side
    422,932.10x = 107,915,855,014.98
  5. Step 5: Solve for x
    x = 107,915,855,014.98/422,932.10
  6. Step 6: Final answer
    x = 255,161.18

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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.