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Finding the Fourth Proportional to 290,881.26, 436,273.29 and 80,540.46

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Solution

The fourth proportional to 290,881.26, 436,273.29 and 80,540.46 is: 120,797.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,881.26 : 436,273.29 = 80,540.46 : x
  2. Step 2: Convert to fraction form
    290,881.26/436,273.29 = 80,540.46/x
  3. Step 3: Cross multiply
    290,881.26x = 436,273.29 × 80,540.46
  4. Step 4: Simplify right side
    290,881.26x = 35,137,651,462.31
  5. Step 5: Solve for x
    x = 35,137,651,462.31/290,881.26
  6. Step 6: Final answer
    x = 120,797.23

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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.