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Finding the Fourth Proportional to 342,581.39, 472,750.26 and 189,619.88

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Solution

The fourth proportional to 342,581.39, 472,750.26 and 189,619.88 is: 261,668.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,581.39 : 472,750.26 = 189,619.88 : x
  2. Step 2: Convert to fraction form
    342,581.39/472,750.26 = 189,619.88/x
  3. Step 3: Cross multiply
    342,581.39x = 472,750.26 × 189,619.88
  4. Step 4: Simplify right side
    342,581.39x = 89,642,847,155.56
  5. Step 5: Solve for x
    x = 89,642,847,155.56/342,581.39
  6. Step 6: Final answer
    x = 261,668.76

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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.