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Finding the Fourth Proportional to 221,676.90, 305,269.80 and 192,591.82

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Solution

The fourth proportional to 221,676.90, 305,269.80 and 192,591.82 is: 265,216.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,676.90 : 305,269.80 = 192,591.82 : x
  2. Step 2: Convert to fraction form
    221,676.90/305,269.80 = 192,591.82/x
  3. Step 3: Cross multiply
    221,676.90x = 305,269.80 × 192,591.82
  4. Step 4: Simplify right side
    221,676.90x = 58,792,466,373.04
  5. Step 5: Solve for x
    x = 58,792,466,373.04/221,676.90
  6. Step 6: Final answer
    x = 265,216.93

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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.