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Finding the Fourth Proportional to 490,617.64, 736,211.99 and 206,287.60

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Solution

The fourth proportional to 490,617.64, 736,211.99 and 206,287.60 is: 309,551.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,617.64 : 736,211.99 = 206,287.60 : x
  2. Step 2: Convert to fraction form
    490,617.64/736,211.99 = 206,287.60/x
  3. Step 3: Cross multiply
    490,617.64x = 736,211.99 × 206,287.60
  4. Step 4: Simplify right side
    490,617.64x = 151,871,404,508.32
  5. Step 5: Solve for x
    x = 151,871,404,508.32/490,617.64
  6. Step 6: Final answer
    x = 309,551.46

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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.