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Finding the Fourth Proportional to 351,605.27, 485,205.28 and 206,408.72

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Solution

The fourth proportional to 351,605.27, 485,205.28 and 206,408.72 is: 284,838.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,605.27 : 485,205.28 = 206,408.72 : x
  2. Step 2: Convert to fraction form
    351,605.27/485,205.28 = 206,408.72/x
  3. Step 3: Cross multiply
    351,605.27x = 485,205.28 × 206,408.72
  4. Step 4: Simplify right side
    351,605.27x = 100,150,601,479.03
  5. Step 5: Solve for x
    x = 100,150,601,479.03/351,605.27
  6. Step 6: Final answer
    x = 284,838.17

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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.