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Finding the Fourth Proportional to 202,638.39, 303,963.74 and 69,516.72

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Solution

The fourth proportional to 202,638.39, 303,963.74 and 69,516.72 is: 104,277.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,638.39 : 303,963.74 = 69,516.72 : x
  2. Step 2: Convert to fraction form
    202,638.39/303,963.74 = 69,516.72/x
  3. Step 3: Cross multiply
    202,638.39x = 303,963.74 × 69,516.72
  4. Step 4: Simplify right side
    202,638.39x = 21,130,561,856.15
  5. Step 5: Solve for x
    x = 21,130,561,856.15/202,638.39
  6. Step 6: Final answer
    x = 104,277.19

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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.