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Finding the Fourth Proportional to 268,942.80, 403,414.20 and 225,640.20

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Solution

The fourth proportional to 268,942.80, 403,414.20 and 225,640.20 is: 338,460.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,942.80 : 403,414.20 = 225,640.20 : x
  2. Step 2: Convert to fraction form
    268,942.80/403,414.20 = 225,640.20/x
  3. Step 3: Cross multiply
    268,942.80x = 403,414.20 × 225,640.20
  4. Step 4: Simplify right side
    268,942.80x = 91,026,460,770.84
  5. Step 5: Solve for x
    x = 91,026,460,770.84/268,942.80
  6. Step 6: Final answer
    x = 338,460.30

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1.5x scale

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.