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Finding the Fourth Proportional to 323,059.20, 485,107.20 and 218,342.40

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Solution

The fourth proportional to 323,059.20, 485,107.20 and 218,342.40 is: 327,863.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,059.20 : 485,107.20 = 218,342.40 : x
  2. Step 2: Convert to fraction form
    323,059.20/485,107.20 = 218,342.40/x
  3. Step 3: Cross multiply
    323,059.20x = 485,107.20 × 218,342.40
  4. Step 4: Simplify right side
    323,059.20x = 105,919,470,305.28
  5. Step 5: Solve for x
    x = 105,919,470,305.28/323,059.20
  6. Step 6: Final answer
    x = 327,863.97

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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.