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Finding the Fourth Proportional to 202,371.68, 303,561.64 and 69,404.78

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Solution

The fourth proportional to 202,371.68, 303,561.64 and 69,404.78 is: 104,108.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,371.68 : 303,561.64 = 69,404.78 : x
  2. Step 2: Convert to fraction form
    202,371.68/303,561.64 = 69,404.78/x
  3. Step 3: Cross multiply
    202,371.68x = 303,561.64 × 69,404.78
  4. Step 4: Simplify right side
    202,371.68x = 21,068,628,840.64
  5. Step 5: Solve for x
    x = 21,068,628,840.64/202,371.68
  6. Step 6: Final answer
    x = 104,108.58

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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.