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Finding the Fourth Proportional to 222,410.20, 333,639.60 and 215,411.80

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Solution

The fourth proportional to 222,410.20, 333,639.60 and 215,411.80 is: 323,141.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,410.20 : 333,639.60 = 215,411.80 : x
  2. Step 2: Convert to fraction form
    222,410.20/333,639.60 = 215,411.80/x
  3. Step 3: Cross multiply
    222,410.20x = 333,639.60 × 215,411.80
  4. Step 4: Simplify right side
    222,410.20x = 71,869,906,787.28
  5. Step 5: Solve for x
    x = 71,869,906,787.28/222,410.20
  6. Step 6: Final answer
    x = 323,141.24

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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.