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Finding the Fourth Proportional to 287,692.56, 397,185.84 and 255,773.14

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Solution

The fourth proportional to 287,692.56, 397,185.84 and 255,773.14 is: 353,118.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,692.56 : 397,185.84 = 255,773.14 : x
  2. Step 2: Convert to fraction form
    287,692.56/397,185.84 = 255,773.14/x
  3. Step 3: Cross multiply
    287,692.56x = 397,185.84 × 255,773.14
  4. Step 4: Simplify right side
    287,692.56x = 101,589,468,181.47
  5. Step 5: Solve for x
    x = 101,589,468,181.47/287,692.56
  6. Step 6: Final answer
    x = 353,118.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.