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Finding the Fourth Proportional to 397,551, 548,620.38 and 218,703

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Solution

The fourth proportional to 397,551, 548,620.38 and 218,703 is: 301,810.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,551 : 548,620.38 = 218,703 : x
  2. Step 2: Convert to fraction form
    397,551/548,620.38 = 218,703/x
  3. Step 3: Cross multiply
    397,551x = 548,620.38 × 218,703
  4. Step 4: Simplify right side
    397,551x = 119,984,922,967.14
  5. Step 5: Solve for x
    x = 119,984,922,967.14/397,551
  6. Step 6: Final answer
    x = 301,810.14

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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.