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Finding the Fourth Proportional to 268,912.40, 402,785.40 and 222,256.40

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Solution

The fourth proportional to 268,912.40, 402,785.40 and 222,256.40 is: 332,902.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,912.40 : 402,785.40 = 222,256.40 : x
  2. Step 2: Convert to fraction form
    268,912.40/402,785.40 = 222,256.40/x
  3. Step 3: Cross multiply
    268,912.40x = 402,785.40 × 222,256.40
  4. Step 4: Simplify right side
    268,912.40x = 89,521,632,976.56
  5. Step 5: Solve for x
    x = 89,521,632,976.56/268,912.40
  6. Step 6: Final answer
    x = 332,902.58

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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.