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Finding the Fourth Proportional to 265,474.68, 398,200.43 and 85,556.12

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Solution

The fourth proportional to 265,474.68, 398,200.43 and 85,556.12 is: 128,330.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,474.68 : 398,200.43 = 85,556.12 : x
  2. Step 2: Convert to fraction form
    265,474.68/398,200.43 = 85,556.12/x
  3. Step 3: Cross multiply
    265,474.68x = 398,200.43 × 85,556.12
  4. Step 4: Simplify right side
    265,474.68x = 34,068,481,354.35
  5. Step 5: Solve for x
    x = 34,068,481,354.35/265,474.68
  6. Step 6: Final answer
    x = 128,330.44

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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.