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Finding the Fourth Proportional to 411,771.79, 617,639.49 and 112,252.39

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Solution

The fourth proportional to 411,771.79, 617,639.49 and 112,252.39 is: 168,373.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,771.79 : 617,639.49 = 112,252.39 : x
  2. Step 2: Convert to fraction form
    411,771.79/617,639.49 = 112,252.39/x
  3. Step 3: Cross multiply
    411,771.79x = 617,639.49 × 112,252.39
  4. Step 4: Simplify right side
    411,771.79x = 69,331,508,910.88
  5. Step 5: Solve for x
    x = 69,331,508,910.88/411,771.79
  6. Step 6: Final answer
    x = 168,373.62

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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.