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Finding the Fourth Proportional to 204,943.20, 307,414.80 and 120,616.80

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Solution

The fourth proportional to 204,943.20, 307,414.80 and 120,616.80 is: 180,925.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,943.20 : 307,414.80 = 120,616.80 : x
  2. Step 2: Convert to fraction form
    204,943.20/307,414.80 = 120,616.80/x
  3. Step 3: Cross multiply
    204,943.20x = 307,414.80 × 120,616.80
  4. Step 4: Simplify right side
    204,943.20x = 37,079,389,448.64
  5. Step 5: Solve for x
    x = 37,079,389,448.64/204,943.20
  6. Step 6: Final answer
    x = 180,925.20

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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.