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Finding the Fourth Proportional to 351,861.59, 485,557.17 and 208,536.54

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Solution

The fourth proportional to 351,861.59, 485,557.17 and 208,536.54 is: 287,773.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,861.59 : 485,557.17 = 208,536.54 : x
  2. Step 2: Convert to fraction form
    351,861.59/485,557.17 = 208,536.54/x
  3. Step 3: Cross multiply
    351,861.59x = 485,557.17 × 208,536.54
  4. Step 4: Simplify right side
    351,861.59x = 101,256,412,203.99
  5. Step 5: Solve for x
    x = 101,256,412,203.99/351,861.59
  6. Step 6: Final answer
    x = 287,773.42

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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.