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Finding the Fourth Proportional to 291,204.72, 436,806.77 and 91,542.56

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Solution

The fourth proportional to 291,204.72, 436,806.77 and 91,542.56 is: 137,313.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,204.72 : 436,806.77 = 91,542.56 : x
  2. Step 2: Convert to fraction form
    291,204.72/436,806.77 = 91,542.56/x
  3. Step 3: Cross multiply
    291,204.72x = 436,806.77 × 91,542.56
  4. Step 4: Simplify right side
    291,204.72x = 39,986,407,309.38
  5. Step 5: Solve for x
    x = 39,986,407,309.38/291,204.72
  6. Step 6: Final answer
    x = 137,313.73

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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.