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Finding the Fourth Proportional to 400,404.40, 600,188.20 and 133,945.72

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Solution

The fourth proportional to 400,404.40, 600,188.20 and 133,945.72 is: 200,778.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,404.40 : 600,188.20 = 133,945.72 : x
  2. Step 2: Convert to fraction form
    400,404.40/600,188.20 = 133,945.72/x
  3. Step 3: Cross multiply
    400,404.40x = 600,188.20 × 133,945.72
  4. Step 4: Simplify right side
    400,404.40x = 80,392,640,584.50
  5. Step 5: Solve for x
    x = 80,392,640,584.50/400,404.40
  6. Step 6: Final answer
    x = 200,778.61

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1.5x scale

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.