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Finding the Fourth Proportional to 411,896.70, 617,845.05 and 131,442.30

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Solution

The fourth proportional to 411,896.70, 617,845.05 and 131,442.30 is: 197,163.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,896.70 : 617,845.05 = 131,442.30 : x
  2. Step 2: Convert to fraction form
    411,896.70/617,845.05 = 131,442.30/x
  3. Step 3: Cross multiply
    411,896.70x = 617,845.05 × 131,442.30
  4. Step 4: Simplify right side
    411,896.70x = 81,210,974,415.62
  5. Step 5: Solve for x
    x = 81,210,974,415.62/411,896.70
  6. Step 6: Final answer
    x = 197,163.45

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Similar ratio
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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.