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Finding the Fourth Proportional to 263,692.25, 395,378.90 and 103,576.51

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Solution

The fourth proportional to 263,692.25, 395,378.90 and 103,576.51 is: 155,302.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,692.25 : 395,378.90 = 103,576.51 : x
  2. Step 2: Convert to fraction form
    263,692.25/395,378.90 = 103,576.51/x
  3. Step 3: Cross multiply
    263,692.25x = 395,378.90 × 103,576.51
  4. Step 4: Simplify right side
    263,692.25x = 40,951,966,589.64
  5. Step 5: Solve for x
    x = 40,951,966,589.64/263,692.25
  6. Step 6: Final answer
    x = 155,302.12

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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.