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Finding the Fourth Proportional to 216,539.50, 298,815.56 and 125,891.58

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Solution

The fourth proportional to 216,539.50, 298,815.56 and 125,891.58 is: 173,725.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,539.50 : 298,815.56 = 125,891.58 : x
  2. Step 2: Convert to fraction form
    216,539.50/298,815.56 = 125,891.58/x
  3. Step 3: Cross multiply
    216,539.50x = 298,815.56 × 125,891.58
  4. Step 4: Simplify right side
    216,539.50x = 37,618,362,976.98
  5. Step 5: Solve for x
    x = 37,618,362,976.98/216,539.50
  6. Step 6: Final answer
    x = 173,725.18

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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.