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Finding the Fourth Proportional to 202,636.84, 303,961.40 and 69,515.18

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Solution

The fourth proportional to 202,636.84, 303,961.40 and 69,515.18 is: 104,274.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,636.84 : 303,961.40 = 69,515.18 : x
  2. Step 2: Convert to fraction form
    202,636.84/303,961.40 = 69,515.18/x
  3. Step 3: Cross multiply
    202,636.84x = 303,961.40 × 69,515.18
  4. Step 4: Simplify right side
    202,636.84x = 21,129,929,914.25
  5. Step 5: Solve for x
    x = 21,129,929,914.25/202,636.84
  6. Step 6: Final answer
    x = 104,274.87

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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.