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Finding the Fourth Proportional to 205,608.98, 308,414.39 and 72,417.04

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Solution

The fourth proportional to 205,608.98, 308,414.39 and 72,417.04 is: 108,625.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,608.98 : 308,414.39 = 72,417.04 : x
  2. Step 2: Convert to fraction form
    205,608.98/308,414.39 = 72,417.04/x
  3. Step 3: Cross multiply
    205,608.98x = 308,414.39 × 72,417.04
  4. Step 4: Simplify right side
    205,608.98x = 22,334,456,084.08
  5. Step 5: Solve for x
    x = 22,334,456,084.08/205,608.98
  6. Step 6: Final answer
    x = 108,625.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.