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Finding the Fourth Proportional to 490,617.27, 736,211.43 and 206,287.22

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Solution

The fourth proportional to 490,617.27, 736,211.43 and 206,287.22 is: 309,550.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,617.27 : 736,211.43 = 206,287.22 : x
  2. Step 2: Convert to fraction form
    490,617.27/736,211.43 = 206,287.22/x
  3. Step 3: Cross multiply
    490,617.27x = 736,211.43 × 206,287.22
  4. Step 4: Simplify right side
    490,617.27x = 151,871,005,545.87
  5. Step 5: Solve for x
    x = 151,871,005,545.87/490,617.27
  6. Step 6: Final answer
    x = 309,550.88

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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.