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Finding the Fourth Proportional to 490,617.33, 736,211.51 and 206,287.28

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Solution

The fourth proportional to 490,617.33, 736,211.51 and 206,287.28 is: 309,550.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,617.33 : 736,211.51 = 206,287.28 : x
  2. Step 2: Convert to fraction form
    490,617.33/736,211.51 = 206,287.28/x
  3. Step 3: Cross multiply
    490,617.33x = 736,211.51 × 206,287.28
  4. Step 4: Simplify right side
    490,617.33x = 151,871,069,902.59
  5. Step 5: Solve for x
    x = 151,871,069,902.59/490,617.33
  6. Step 6: Final answer
    x = 309,550.97

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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.