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Finding the Fourth Proportional to 290,975.94, 436,464.45 and 80,614.44

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Solution

The fourth proportional to 290,975.94, 436,464.45 and 80,614.44 is: 120,921.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,975.94 : 436,464.45 = 80,614.44 : x
  2. Step 2: Convert to fraction form
    290,975.94/436,464.45 = 80,614.44/x
  3. Step 3: Cross multiply
    290,975.94x = 436,464.45 × 80,614.44
  4. Step 4: Simplify right side
    290,975.94x = 35,185,337,216.66
  5. Step 5: Solve for x
    x = 35,185,337,216.66/290,975.94
  6. Step 6: Final answer
    x = 120,921.81

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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.