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Finding the Fourth Proportional to 204,804.80, 307,170.30 and 145,399.05

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Solution

The fourth proportional to 204,804.80, 307,170.30 and 145,399.05 is: 218,072.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,804.80 : 307,170.30 = 145,399.05 : x
  2. Step 2: Convert to fraction form
    204,804.80/307,170.30 = 145,399.05/x
  3. Step 3: Cross multiply
    204,804.80x = 307,170.30 × 145,399.05
  4. Step 4: Simplify right side
    204,804.80x = 44,662,269,944.53
  5. Step 5: Solve for x
    x = 44,662,269,944.53/204,804.80
  6. Step 6: Final answer
    x = 218,072.37

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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.