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Finding the Fourth Proportional to 399,073.26, 550,732.68 and 217,796.82

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Solution

The fourth proportional to 399,073.26, 550,732.68 and 217,796.82 is: 300,565.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,073.26 : 550,732.68 = 217,796.82 : x
  2. Step 2: Convert to fraction form
    399,073.26/550,732.68 = 217,796.82/x
  3. Step 3: Cross multiply
    399,073.26x = 550,732.68 × 217,796.82
  4. Step 4: Simplify right side
    399,073.26x = 119,947,826,374.08
  5. Step 5: Solve for x
    x = 119,947,826,374.08/399,073.26
  6. Step 6: Final answer
    x = 300,565.93

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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.