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Finding the Fourth Proportional to 397,108.58, 548,007.81 and 215,817.62

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Solution

The fourth proportional to 397,108.58, 548,007.81 and 215,817.62 is: 297,827.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,108.58 : 548,007.81 = 215,817.62 : x
  2. Step 2: Convert to fraction form
    397,108.58/548,007.81 = 215,817.62/x
  3. Step 3: Cross multiply
    397,108.58x = 548,007.81 × 215,817.62
  4. Step 4: Simplify right side
    397,108.58x = 118,269,741,295.61
  5. Step 5: Solve for x
    x = 118,269,741,295.61/397,108.58
  6. Step 6: Final answer
    x = 297,827.21

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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.