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Finding the Fourth Proportional to 436,845.92, 655,268.40 and 137,352.68

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Solution

The fourth proportional to 436,845.92, 655,268.40 and 137,352.68 is: 206,028.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,845.92 : 655,268.40 = 137,352.68 : x
  2. Step 2: Convert to fraction form
    436,845.92/655,268.40 = 137,352.68/x
  3. Step 3: Cross multiply
    436,845.92x = 655,268.40 × 137,352.68
  4. Step 4: Simplify right side
    436,845.92x = 90,002,870,859.31
  5. Step 5: Solve for x
    x = 90,002,870,859.31/436,845.92
  6. Step 6: Final answer
    x = 206,028.87

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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.