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Finding the Fourth Proportional to 265,940.28, 398,630.28 and 88,399.56

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Solution

The fourth proportional to 265,940.28, 398,630.28 and 88,399.56 is: 132,506.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,940.28 : 398,630.28 = 88,399.56 : x
  2. Step 2: Convert to fraction form
    265,940.28/398,630.28 = 88,399.56/x
  3. Step 3: Cross multiply
    265,940.28x = 398,630.28 × 88,399.56
  4. Step 4: Simplify right side
    265,940.28x = 35,238,741,354.68
  5. Step 5: Solve for x
    x = 35,238,741,354.68/265,940.28
  6. Step 6: Final answer
    x = 132,506.22

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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.