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Finding the Fourth Proportional to 200,750.70, 300,923.55 and 74,309.70

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Solution

The fourth proportional to 200,750.70, 300,923.55 and 74,309.70 is: 111,389.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,750.70 : 300,923.55 = 74,309.70 : x
  2. Step 2: Convert to fraction form
    200,750.70/300,923.55 = 74,309.70/x
  3. Step 3: Cross multiply
    200,750.70x = 300,923.55 × 74,309.70
  4. Step 4: Simplify right side
    200,750.70x = 22,361,538,723.44
  5. Step 5: Solve for x
    x = 22,361,538,723.44/200,750.70
  6. Step 6: Final answer
    x = 111,389.59

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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.