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Finding the Fourth Proportional to 399,069.73, 550,727.84 and 217,793.32

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Solution

The fourth proportional to 399,069.73, 550,727.84 and 217,793.32 is: 300,561.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,069.73 : 550,727.84 = 217,793.32 : x
  2. Step 2: Convert to fraction form
    399,069.73/550,727.84 = 217,793.32/x
  3. Step 3: Cross multiply
    399,069.73x = 550,727.84 × 217,793.32
  4. Step 4: Simplify right side
    399,069.73x = 119,944,844,690.03
  5. Step 5: Solve for x
    x = 119,944,844,690.03/399,069.73
  6. Step 6: Final answer
    x = 300,561.12

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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.