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Finding the Fourth Proportional to 235,147.70, 352,619.49 and 85,338.20

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Solution

The fourth proportional to 235,147.70, 352,619.49 and 85,338.20 is: 127,970.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,147.70 : 352,619.49 = 85,338.20 : x
  2. Step 2: Convert to fraction form
    235,147.70/352,619.49 = 85,338.20/x
  3. Step 3: Cross multiply
    235,147.70x = 352,619.49 × 85,338.20
  4. Step 4: Simplify right side
    235,147.70x = 30,091,912,561.52
  5. Step 5: Solve for x
    x = 30,091,912,561.52/235,147.70
  6. Step 6: Final answer
    x = 127,970.26

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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.