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Finding the Fourth Proportional to 351,606.90, 485,207.52 and 206,410.35

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Solution

The fourth proportional to 351,606.90, 485,207.52 and 206,410.35 is: 284,840.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,606.90 : 485,207.52 = 206,410.35 : x
  2. Step 2: Convert to fraction form
    351,606.90/485,207.52 = 206,410.35/x
  3. Step 3: Cross multiply
    351,606.90x = 485,207.52 × 206,410.35
  4. Step 4: Simplify right side
    351,606.90x = 100,151,854,025.83
  5. Step 5: Solve for x
    x = 100,151,854,025.83/351,606.90
  6. Step 6: Final answer
    x = 284,840.41

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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.