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Finding the Fourth Proportional to 327,187.88, 490,782.60 and 99,485.60

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Solution

The fourth proportional to 327,187.88, 490,782.60 and 99,485.60 is: 149,228.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,187.88 : 490,782.60 = 99,485.60 : x
  2. Step 2: Convert to fraction form
    327,187.88/490,782.60 = 99,485.60/x
  3. Step 3: Cross multiply
    327,187.88x = 490,782.60 × 99,485.60
  4. Step 4: Simplify right side
    327,187.88x = 48,825,801,430.56
  5. Step 5: Solve for x
    x = 48,825,801,430.56/327,187.88
  6. Step 6: Final answer
    x = 149,228.64

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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.