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Finding the Fourth Proportional to 305,896.80, 458,845.20 and 199,608.60

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Solution

The fourth proportional to 305,896.80, 458,845.20 and 199,608.60 is: 299,412.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,896.80 : 458,845.20 = 199,608.60 : x
  2. Step 2: Convert to fraction form
    305,896.80/458,845.20 = 199,608.60/x
  3. Step 3: Cross multiply
    305,896.80x = 458,845.20 × 199,608.60
  4. Step 4: Simplify right side
    305,896.80x = 91,589,447,988.72
  5. Step 5: Solve for x
    x = 91,589,447,988.72/305,896.80
  6. Step 6: Final answer
    x = 299,412.90

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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.