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Finding the Fourth Proportional to 345,086.40, 517,418.40 and 134,481.60

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Solution

The fourth proportional to 345,086.40, 517,418.40 and 134,481.60 is: 201,640.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,086.40 : 517,418.40 = 134,481.60 : x
  2. Step 2: Convert to fraction form
    345,086.40/517,418.40 = 134,481.60/x
  3. Step 3: Cross multiply
    345,086.40x = 517,418.40 × 134,481.60
  4. Step 4: Simplify right side
    345,086.40x = 69,583,254,301.44
  5. Step 5: Solve for x
    x = 69,583,254,301.44/345,086.40
  6. Step 6: Final answer
    x = 201,640.09

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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.