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Finding the Fourth Proportional to 411,487.80, 617,231.70 and 131,033.40

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Solution

The fourth proportional to 411,487.80, 617,231.70 and 131,033.40 is: 196,550.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,487.80 : 617,231.70 = 131,033.40 : x
  2. Step 2: Convert to fraction form
    411,487.80/617,231.70 = 131,033.40/x
  3. Step 3: Cross multiply
    411,487.80x = 617,231.70 × 131,033.40
  4. Step 4: Simplify right side
    411,487.80x = 80,877,968,238.78
  5. Step 5: Solve for x
    x = 80,877,968,238.78/411,487.80
  6. Step 6: Final answer
    x = 196,550.10

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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.