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Finding the Fourth Proportional to 351,866.20, 485,640.36 and 200,963.20

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Solution

The fourth proportional to 351,866.20, 485,640.36 and 200,963.20 is: 277,366.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,866.20 : 485,640.36 = 200,963.20 : x
  2. Step 2: Convert to fraction form
    351,866.20/485,640.36 = 200,963.20/x
  3. Step 3: Cross multiply
    351,866.20x = 485,640.36 × 200,963.20
  4. Step 4: Simplify right side
    351,866.20x = 97,595,840,794.75
  5. Step 5: Solve for x
    x = 97,595,840,794.75/351,866.20
  6. Step 6: Final answer
    x = 277,366.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.