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Finding the Fourth Proportional to 355,709.16, 490,892.31 and 202,771.44

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Solution

The fourth proportional to 355,709.16, 490,892.31 and 202,771.44 is: 279,832.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,709.16 : 490,892.31 = 202,771.44 : x
  2. Step 2: Convert to fraction form
    355,709.16/490,892.31 = 202,771.44/x
  3. Step 3: Cross multiply
    355,709.16x = 490,892.31 × 202,771.44
  4. Step 4: Simplify right side
    355,709.16x = 99,538,940,583.63
  5. Step 5: Solve for x
    x = 99,538,940,583.63/355,709.16
  6. Step 6: Final answer
    x = 279,832.38

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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.