Home / 268,905.96-403,362.18-81,919.08

Finding the Fourth Proportional to 268,905.96, 403,362.18 and 81,919.08

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Solution

The fourth proportional to 268,905.96, 403,362.18 and 81,919.08 is: 122,879.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,905.96 : 403,362.18 = 81,919.08 : x
  2. Step 2: Convert to fraction form
    268,905.96/403,362.18 = 81,919.08/x
  3. Step 3: Cross multiply
    268,905.96x = 403,362.18 × 81,919.08
  4. Step 4: Simplify right side
    268,905.96x = 33,043,058,692.39
  5. Step 5: Solve for x
    x = 33,043,058,692.39/268,905.96
  6. Step 6: Final answer
    x = 122,879.61

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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.