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Finding the Fourth Proportional to 218,563.17, 301,626.45 and 121,766.94

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Solution

The fourth proportional to 218,563.17, 301,626.45 and 121,766.94 is: 168,043.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,563.17 : 301,626.45 = 121,766.94 : x
  2. Step 2: Convert to fraction form
    218,563.17/301,626.45 = 121,766.94/x
  3. Step 3: Cross multiply
    218,563.17x = 301,626.45 × 121,766.94
  4. Step 4: Simplify right side
    218,563.17x = 36,728,129,839.56
  5. Step 5: Solve for x
    x = 36,728,129,839.56/218,563.17
  6. Step 6: Final answer
    x = 168,043.54

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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.