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Finding the Fourth Proportional to 202,343.55, 303,515.33 and 69,203.85

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Solution

The fourth proportional to 202,343.55, 303,515.33 and 69,203.85 is: 103,805.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,343.55 : 303,515.33 = 69,203.85 : x
  2. Step 2: Convert to fraction form
    202,343.55/303,515.33 = 69,203.85/x
  3. Step 3: Cross multiply
    202,343.55x = 303,515.33 × 69,203.85
  4. Step 4: Simplify right side
    202,343.55x = 21,004,429,024.00
  5. Step 5: Solve for x
    x = 21,004,429,024.00/202,343.55
  6. Step 6: Final answer
    x = 103,805.78

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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.