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Finding the Fourth Proportional to 353,092.21, 487,270.42 and 191,947.57

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Solution

The fourth proportional to 353,092.21, 487,270.42 and 191,947.57 is: 264,889.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,092.21 : 487,270.42 = 191,947.57 : x
  2. Step 2: Convert to fraction form
    353,092.21/487,270.42 = 191,947.57/x
  3. Step 3: Cross multiply
    353,092.21x = 487,270.42 × 191,947.57
  4. Step 4: Simplify right side
    353,092.21x = 93,530,371,353.83
  5. Step 5: Solve for x
    x = 93,530,371,353.83/353,092.21
  6. Step 6: Final answer
    x = 264,889.37

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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.