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Finding the Fourth Proportional to 422,892.18, 634,653.64 and 170,174.92

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Solution

The fourth proportional to 422,892.18, 634,653.64 and 170,174.92 is: 255,389.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,892.18 : 634,653.64 = 170,174.92 : x
  2. Step 2: Convert to fraction form
    422,892.18/634,653.64 = 170,174.92/x
  3. Step 3: Cross multiply
    422,892.18x = 634,653.64 × 170,174.92
  4. Step 4: Simplify right side
    422,892.18x = 108,002,132,414.71
  5. Step 5: Solve for x
    x = 108,002,132,414.71/422,892.18
  6. Step 6: Final answer
    x = 255,389.29

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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.