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Finding the Fourth Proportional to 202,689.09, 304,040.86 and 69,568.43

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Solution

The fourth proportional to 202,689.09, 304,040.86 and 69,568.43 is: 104,355.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,689.09 : 304,040.86 = 69,568.43 : x
  2. Step 2: Convert to fraction form
    202,689.09/304,040.86 = 69,568.43/x
  3. Step 3: Cross multiply
    202,689.09x = 304,040.86 × 69,568.43
  4. Step 4: Simplify right side
    202,689.09x = 21,151,643,591.92
  5. Step 5: Solve for x
    x = 21,151,643,591.92/202,689.09
  6. Step 6: Final answer
    x = 104,355.12

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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.