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Finding the Fourth Proportional to 217,568.70, 300,245.67 and 122,069.16

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Solution

The fourth proportional to 217,568.70, 300,245.67 and 122,069.16 is: 168,455.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,568.70 : 300,245.67 = 122,069.16 : x
  2. Step 2: Convert to fraction form
    217,568.70/300,245.67 = 122,069.16/x
  3. Step 3: Cross multiply
    217,568.70x = 300,245.67 × 122,069.16
  4. Step 4: Simplify right side
    217,568.70x = 36,650,736,730.54
  5. Step 5: Solve for x
    x = 36,650,736,730.54/217,568.70
  6. Step 6: Final answer
    x = 168,455.93

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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.