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Finding the Fourth Proportional to 200,615.76, 300,939.48 and 67,494.96

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Solution

The fourth proportional to 200,615.76, 300,939.48 and 67,494.96 is: 101,247.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,615.76 : 300,939.48 = 67,494.96 : x
  2. Step 2: Convert to fraction form
    200,615.76/300,939.48 = 67,494.96/x
  3. Step 3: Cross multiply
    200,615.76x = 300,939.48 × 67,494.96
  4. Step 4: Simplify right side
    200,615.76x = 20,311,898,165.02
  5. Step 5: Solve for x
    x = 20,311,898,165.02/200,615.76
  6. Step 6: Final answer
    x = 101,247.77

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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.