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Finding the Fourth Proportional to 342,571.57, 472,749.69 and 189,620.29

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Solution

The fourth proportional to 342,571.57, 472,749.69 and 189,620.29 is: 261,676.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,571.57 : 472,749.69 = 189,620.29 : x
  2. Step 2: Convert to fraction form
    342,571.57/472,749.69 = 189,620.29/x
  3. Step 3: Cross multiply
    342,571.57x = 472,749.69 × 189,620.29
  4. Step 4: Simplify right side
    342,571.57x = 89,642,933,315.21
  5. Step 5: Solve for x
    x = 89,642,933,315.21/342,571.57
  6. Step 6: Final answer
    x = 261,676.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.