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Finding the Fourth Proportional to 353,958.78, 488,462.31 and 192,813.43

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Solution

The fourth proportional to 353,958.78, 488,462.31 and 192,813.43 is: 266,082.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,958.78 : 488,462.31 = 192,813.43 : x
  2. Step 2: Convert to fraction form
    353,958.78/488,462.31 = 192,813.43/x
  3. Step 3: Cross multiply
    353,958.78x = 488,462.31 × 192,813.43
  4. Step 4: Simplify right side
    353,958.78x = 94,182,093,416.82
  5. Step 5: Solve for x
    x = 94,182,093,416.82/353,958.78
  6. Step 6: Final answer
    x = 266,082.09

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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.