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Finding the Fourth Proportional to 323,628.80, 485,356.80 and 113,244.80

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Solution

The fourth proportional to 323,628.80, 485,356.80 and 113,244.80 is: 169,836.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,628.80 : 485,356.80 = 113,244.80 : x
  2. Step 2: Convert to fraction form
    323,628.80/485,356.80 = 113,244.80/x
  3. Step 3: Cross multiply
    323,628.80x = 485,356.80 × 113,244.80
  4. Step 4: Simplify right side
    323,628.80x = 54,964,133,744.64
  5. Step 5: Solve for x
    x = 54,964,133,744.64/323,628.80
  6. Step 6: Final answer
    x = 169,836.97

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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.