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Finding the Fourth Proportional to 353,911.35, 488,403.21 and 192,766.35

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Solution

The fourth proportional to 353,911.35, 488,403.21 and 192,766.35 is: 266,020.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,911.35 : 488,403.21 = 192,766.35 : x
  2. Step 2: Convert to fraction form
    353,911.35/488,403.21 = 192,766.35/x
  3. Step 3: Cross multiply
    353,911.35x = 488,403.21 × 192,766.35
  4. Step 4: Simplify right side
    353,911.35x = 94,147,704,119.98
  5. Step 5: Solve for x
    x = 94,147,704,119.98/353,911.35
  6. Step 6: Final answer
    x = 266,020.58

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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.