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Finding the Fourth Proportional to 202,380.47, 303,561.68 and 69,272.63

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Solution

The fourth proportional to 202,380.47, 303,561.68 and 69,272.63 is: 103,905.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,380.47 : 303,561.68 = 69,272.63 : x
  2. Step 2: Convert to fraction form
    202,380.47/303,561.68 = 69,272.63/x
  3. Step 3: Cross multiply
    202,380.47x = 303,561.68 × 69,272.63
  4. Step 4: Simplify right side
    202,380.47x = 21,028,515,940.82
  5. Step 5: Solve for x
    x = 21,028,515,940.82/202,380.47
  6. Step 6: Final answer
    x = 103,905.86

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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.