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Finding the Fourth Proportional to 268,695.36, 403,028.43 and 81,692.28

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Solution

The fourth proportional to 268,695.36, 403,028.43 and 81,692.28 is: 122,533.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,695.36 : 403,028.43 = 81,692.28 : x
  2. Step 2: Convert to fraction form
    268,695.36/403,028.43 = 81,692.28/x
  3. Step 3: Cross multiply
    268,695.36x = 403,028.43 × 81,692.28
  4. Step 4: Simplify right side
    268,695.36x = 32,924,311,351.52
  5. Step 5: Solve for x
    x = 32,924,311,351.52/268,695.36
  6. Step 6: Final answer
    x = 122,533.98

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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.