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Finding the Fourth Proportional to 422,833.23, 634,343.15 and 123,337.25

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Solution

The fourth proportional to 422,833.23, 634,343.15 and 123,337.25 is: 185,033.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,833.23 : 634,343.15 = 123,337.25 : x
  2. Step 2: Convert to fraction form
    422,833.23/634,343.15 = 123,337.25/x
  3. Step 3: Cross multiply
    422,833.23x = 634,343.15 × 123,337.25
  4. Step 4: Simplify right side
    422,833.23x = 78,238,135,888.94
  5. Step 5: Solve for x
    x = 78,238,135,888.94/422,833.23
  6. Step 6: Final answer
    x = 185,033.08

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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.