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Finding the Fourth Proportional to 422,899.51, 634,374.89 and 170,179.01

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Solution

The fourth proportional to 422,899.51, 634,374.89 and 170,179.01 is: 255,278.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,899.51 : 634,374.89 = 170,179.01 : x
  2. Step 2: Convert to fraction form
    422,899.51/634,374.89 = 170,179.01/x
  3. Step 3: Cross multiply
    422,899.51x = 634,374.89 × 170,179.01
  4. Step 4: Simplify right side
    422,899.51x = 107,957,292,419.64
  5. Step 5: Solve for x
    x = 107,957,292,419.64/422,899.51
  6. Step 6: Final answer
    x = 255,278.83

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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.