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Finding the Fourth Proportional to 490,861.10, 736,209.63 and 135,911

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Solution

The fourth proportional to 490,861.10, 736,209.63 and 135,911 is: 203,843.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,861.10 : 736,209.63 = 135,911 : x
  2. Step 2: Convert to fraction form
    490,861.10/736,209.63 = 135,911/x
  3. Step 3: Cross multiply
    490,861.10x = 736,209.63 × 135,911
  4. Step 4: Simplify right side
    490,861.10x = 100,058,987,022.93
  5. Step 5: Solve for x
    x = 100,058,987,022.93/490,861.10
  6. Step 6: Final answer
    x = 203,843.79

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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.