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Finding the Fourth Proportional to 235,491.15, 324,863.52 and 139,930.20

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Solution

The fourth proportional to 235,491.15, 324,863.52 and 139,930.20 is: 193,035.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,491.15 : 324,863.52 = 139,930.20 : x
  2. Step 2: Convert to fraction form
    235,491.15/324,863.52 = 139,930.20/x
  3. Step 3: Cross multiply
    235,491.15x = 324,863.52 × 139,930.20
  4. Step 4: Simplify right side
    235,491.15x = 45,458,217,326.30
  5. Step 5: Solve for x
    x = 45,458,217,326.30/235,491.15
  6. Step 6: Final answer
    x = 193,035.78

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1.5x scale

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.