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Finding the Fourth Proportional to 281,325.87, 422,025.86 and 91,719.65

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Solution

The fourth proportional to 281,325.87, 422,025.86 and 91,719.65 is: 137,591.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,325.87 : 422,025.86 = 91,719.65 : x
  2. Step 2: Convert to fraction form
    281,325.87/422,025.86 = 91,719.65/x
  3. Step 3: Cross multiply
    281,325.87x = 422,025.86 × 91,719.65
  4. Step 4: Simplify right side
    281,325.87x = 38,708,065,454.51
  5. Step 5: Solve for x
    x = 38,708,065,454.51/281,325.87
  6. Step 6: Final answer
    x = 137,591.56

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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.