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Finding the Fourth Proportional to 422,713.56, 634,153.22 and 156,476.12

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Solution

The fourth proportional to 422,713.56, 634,153.22 and 156,476.12 is: 234,744.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,713.56 : 634,153.22 = 156,476.12 : x
  2. Step 2: Convert to fraction form
    422,713.56/634,153.22 = 156,476.12/x
  3. Step 3: Cross multiply
    422,713.56x = 634,153.22 × 156,476.12
  4. Step 4: Simplify right side
    422,713.56x = 99,229,835,351.11
  5. Step 5: Solve for x
    x = 99,229,835,351.11/422,713.56
  6. Step 6: Final answer
    x = 234,744.86

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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.