Home / 265,741.20-398,719.32-107,928.72

Finding the Fourth Proportional to 265,741.20, 398,719.32 and 107,928.72

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Solution

The fourth proportional to 265,741.20, 398,719.32 and 107,928.72 is: 161,936.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,741.20 : 398,719.32 = 107,928.72 : x
  2. Step 2: Convert to fraction form
    265,741.20/398,719.32 = 107,928.72/x
  3. Step 3: Cross multiply
    265,741.20x = 398,719.32 × 107,928.72
  4. Step 4: Simplify right side
    265,741.20x = 43,033,265,846.87
  5. Step 5: Solve for x
    x = 43,033,265,846.87/265,741.20
  6. Step 6: Final answer
    x = 161,936.75

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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.