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Finding the Fourth Proportional to 290,847.88, 436,268.56 and 113,479.45

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Solution

The fourth proportional to 290,847.88, 436,268.56 and 113,479.45 is: 170,217.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,847.88 : 436,268.56 = 113,479.45 : x
  2. Step 2: Convert to fraction form
    290,847.88/436,268.56 = 113,479.45/x
  3. Step 3: Cross multiply
    290,847.88x = 436,268.56 × 113,479.45
  4. Step 4: Simplify right side
    290,847.88x = 49,507,516,241.09
  5. Step 5: Solve for x
    x = 49,507,516,241.09/290,847.88
  6. Step 6: Final answer
    x = 170,217.90

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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.