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Finding the Fourth Proportional to 422,876.71, 634,630.31 and 170,159.34

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Solution

The fourth proportional to 422,876.71, 634,630.31 and 170,159.34 is: 255,365.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,876.71 : 634,630.31 = 170,159.34 : x
  2. Step 2: Convert to fraction form
    422,876.71/634,630.31 = 170,159.34/x
  3. Step 3: Cross multiply
    422,876.71x = 634,630.31 × 170,159.34
  4. Step 4: Simplify right side
    422,876.71x = 107,988,275,118.99
  5. Step 5: Solve for x
    x = 107,988,275,118.99/422,876.71
  6. Step 6: Final answer
    x = 255,365.86

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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.