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Finding the Fourth Proportional to 265,940.20, 398,910.30 and 195,956.20

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Solution

The fourth proportional to 265,940.20, 398,910.30 and 195,956.20 is: 293,934.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,940.20 : 398,910.30 = 195,956.20 : x
  2. Step 2: Convert to fraction form
    265,940.20/398,910.30 = 195,956.20/x
  3. Step 3: Cross multiply
    265,940.20x = 398,910.30 × 195,956.20
  4. Step 4: Simplify right side
    265,940.20x = 78,168,946,528.86
  5. Step 5: Solve for x
    x = 78,168,946,528.86/265,940.20
  6. Step 6: Final answer
    x = 293,934.30

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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.