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Finding the Fourth Proportional to 265,719.70, 398,324.40 and 88,135.30

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Solution

The fourth proportional to 265,719.70, 398,324.40 and 88,135.30 is: 132,118.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,719.70 : 398,324.40 = 88,135.30 : x
  2. Step 2: Convert to fraction form
    265,719.70/398,324.40 = 88,135.30/x
  3. Step 3: Cross multiply
    265,719.70x = 398,324.40 × 88,135.30
  4. Step 4: Simplify right side
    265,719.70x = 35,106,440,491.32
  5. Step 5: Solve for x
    x = 35,106,440,491.32/265,719.70
  6. Step 6: Final answer
    x = 132,118.32

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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.