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Finding the Fourth Proportional to 399,849.67, 599,805.51 and 133,611.13

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Solution

The fourth proportional to 399,849.67, 599,805.51 and 133,611.13 is: 200,427.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,849.67 : 599,805.51 = 133,611.13 : x
  2. Step 2: Convert to fraction form
    399,849.67/599,805.51 = 133,611.13/x
  3. Step 3: Cross multiply
    399,849.67x = 599,805.51 × 133,611.13
  4. Step 4: Simplify right side
    399,849.67x = 80,140,691,971.33
  5. Step 5: Solve for x
    x = 80,140,691,971.33/399,849.67
  6. Step 6: Final answer
    x = 200,427.06

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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.