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Finding the Fourth Proportional to 490,617.12, 736,211.22 and 206,287.08

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Solution

The fourth proportional to 490,617.12, 736,211.22 and 206,287.08 is: 309,550.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,617.12 : 736,211.22 = 206,287.08 : x
  2. Step 2: Convert to fraction form
    490,617.12/736,211.22 = 206,287.08/x
  3. Step 3: Cross multiply
    490,617.12x = 736,211.22 × 206,287.08
  4. Step 4: Simplify right side
    490,617.12x = 151,870,862,837.04
  5. Step 5: Solve for x
    x = 151,870,862,837.04/490,617.12
  6. Step 6: Final answer
    x = 309,550.68

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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.