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Finding the Fourth Proportional to 203,349.49, 305,072.55 and 70,230.85

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Solution

The fourth proportional to 203,349.49, 305,072.55 and 70,230.85 is: 105,362.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,349.49 : 305,072.55 = 70,230.85 : x
  2. Step 2: Convert to fraction form
    203,349.49/305,072.55 = 70,230.85/x
  3. Step 3: Cross multiply
    203,349.49x = 305,072.55 × 70,230.85
  4. Step 4: Simplify right side
    203,349.49x = 21,425,504,498.17
  5. Step 5: Solve for x
    x = 21,425,504,498.17/203,349.49
  6. Step 6: Final answer
    x = 105,362.96

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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.