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Finding the Fourth Proportional to 235,103.40, 352,806.30 and 129,997.80

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Solution

The fourth proportional to 235,103.40, 352,806.30 and 129,997.80 is: 195,080.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,103.40 : 352,806.30 = 129,997.80 : x
  2. Step 2: Convert to fraction form
    235,103.40/352,806.30 = 129,997.80/x
  3. Step 3: Cross multiply
    235,103.40x = 352,806.30 × 129,997.80
  4. Step 4: Simplify right side
    235,103.40x = 45,864,042,826.14
  5. Step 5: Solve for x
    x = 45,864,042,826.14/235,103.40
  6. Step 6: Final answer
    x = 195,080.30

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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.