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Finding the Fourth Proportional to 217,469.21, 300,109.88 and 120,674.75

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Solution

The fourth proportional to 217,469.21, 300,109.88 and 120,674.75 is: 166,532.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,469.21 : 300,109.88 = 120,674.75 : x
  2. Step 2: Convert to fraction form
    217,469.21/300,109.88 = 120,674.75/x
  3. Step 3: Cross multiply
    217,469.21x = 300,109.88 × 120,674.75
  4. Step 4: Simplify right side
    217,469.21x = 36,215,684,741.53
  5. Step 5: Solve for x
    x = 36,215,684,741.53/217,469.21
  6. Step 6: Final answer
    x = 166,532.47

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1.5x scale

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.