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Finding the Fourth Proportional to 408,758.56, 613,138.08 and 113,270.56

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Solution

The fourth proportional to 408,758.56, 613,138.08 and 113,270.56 is: 169,905.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,758.56 : 613,138.08 = 113,270.56 : x
  2. Step 2: Convert to fraction form
    408,758.56/613,138.08 = 113,270.56/x
  3. Step 3: Cross multiply
    408,758.56x = 613,138.08 × 113,270.56
  4. Step 4: Simplify right side
    408,758.56x = 69,450,493,678.92
  5. Step 5: Solve for x
    x = 69,450,493,678.92/408,758.56
  6. Step 6: Final answer
    x = 169,905.91

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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.