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Finding the Fourth Proportional to 397,552.50, 548,622.45 and 218,704.50

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Solution

The fourth proportional to 397,552.50, 548,622.45 and 218,704.50 is: 301,812.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,552.50 : 548,622.45 = 218,704.50 : x
  2. Step 2: Convert to fraction form
    397,552.50/548,622.45 = 218,704.50/x
  3. Step 3: Cross multiply
    397,552.50x = 548,622.45 × 218,704.50
  4. Step 4: Simplify right side
    397,552.50x = 119,986,198,616.03
  5. Step 5: Solve for x
    x = 119,986,198,616.03/397,552.50
  6. Step 6: Final answer
    x = 301,812.21

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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.