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Finding the Fourth Proportional to 400,188.50, 600,219.86 and 130,326.38

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Solution

The fourth proportional to 400,188.50, 600,219.86 and 130,326.38 is: 195,469.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,188.50 : 600,219.86 = 130,326.38 : x
  2. Step 2: Convert to fraction form
    400,188.50/600,219.86 = 130,326.38/x
  3. Step 3: Cross multiply
    400,188.50x = 600,219.86 × 130,326.38
  4. Step 4: Simplify right side
    400,188.50x = 78,224,481,557.91
  5. Step 5: Solve for x
    x = 78,224,481,557.91/400,188.50
  6. Step 6: Final answer
    x = 195,469.09

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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.