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Finding the Fourth Proportional to 494,638.80, 741,979.80 and 162,214.80

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Solution

The fourth proportional to 494,638.80, 741,979.80 and 162,214.80 is: 243,329.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,638.80 : 741,979.80 = 162,214.80 : x
  2. Step 2: Convert to fraction form
    494,638.80/741,979.80 = 162,214.80/x
  3. Step 3: Cross multiply
    494,638.80x = 741,979.80 × 162,214.80
  4. Step 4: Simplify right side
    494,638.80x = 120,360,104,861.04
  5. Step 5: Solve for x
    x = 120,360,104,861.04/494,638.80
  6. Step 6: Final answer
    x = 243,329.28

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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.