Home / 422,930.21-634,643.17-170,171.33

Finding the Fourth Proportional to 422,930.21, 634,643.17 and 170,171.33

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Solution

The fourth proportional to 422,930.21, 634,643.17 and 170,171.33 is: 255,356.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,930.21 : 634,643.17 = 170,171.33 : x
  2. Step 2: Convert to fraction form
    422,930.21/634,643.17 = 170,171.33/x
  3. Step 3: Cross multiply
    422,930.21x = 634,643.17 × 170,171.33
  4. Step 4: Simplify right side
    422,930.21x = 107,998,068,715.67
  5. Step 5: Solve for x
    x = 107,998,068,715.67/422,930.21
  6. Step 6: Final answer
    x = 255,356.72

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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.