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Finding the Fourth Proportional to 351,676.98, 485,285.51 and 206,467.47

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Solution

The fourth proportional to 351,676.98, 485,285.51 and 206,467.47 is: 284,908.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,676.98 : 485,285.51 = 206,467.47 : x
  2. Step 2: Convert to fraction form
    351,676.98/485,285.51 = 206,467.47/x
  3. Step 3: Cross multiply
    351,676.98x = 485,285.51 × 206,467.47
  4. Step 4: Simplify right side
    351,676.98x = 100,195,671,993.53
  5. Step 5: Solve for x
    x = 100,195,671,993.53/351,676.98
  6. Step 6: Final answer
    x = 284,908.25

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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.