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Finding the Fourth Proportional to 413,972.40, 621,104.40 and 203,469.60

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Solution

The fourth proportional to 413,972.40, 621,104.40 and 203,469.60 is: 305,276.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,972.40 : 621,104.40 = 203,469.60 : x
  2. Step 2: Convert to fraction form
    413,972.40/621,104.40 = 203,469.60/x
  3. Step 3: Cross multiply
    413,972.40x = 621,104.40 × 203,469.60
  4. Step 4: Simplify right side
    413,972.40x = 126,375,863,826.24
  5. Step 5: Solve for x
    x = 126,375,863,826.24/413,972.40
  6. Step 6: Final answer
    x = 305,276.06

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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.