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Finding the Fourth Proportional to 265,912.17, 398,871.75 and 88,419.20

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Solution

The fourth proportional to 265,912.17, 398,871.75 and 88,419.20 is: 132,629.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,912.17 : 398,871.75 = 88,419.20 : x
  2. Step 2: Convert to fraction form
    265,912.17/398,871.75 = 88,419.20/x
  3. Step 3: Cross multiply
    265,912.17x = 398,871.75 × 88,419.20
  4. Step 4: Simplify right side
    265,912.17x = 35,267,919,043.24
  5. Step 5: Solve for x
    x = 35,267,919,043.24/265,912.17
  6. Step 6: Final answer
    x = 132,629.95

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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.