Home / 217,620.96-300,318.69-122,150.18

Finding the Fourth Proportional to 217,620.96, 300,318.69 and 122,150.18

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Solution

The fourth proportional to 217,620.96, 300,318.69 and 122,150.18 is: 168,568.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,620.96 : 300,318.69 = 122,150.18 : x
  2. Step 2: Convert to fraction form
    217,620.96/300,318.69 = 122,150.18/x
  3. Step 3: Cross multiply
    217,620.96x = 300,318.69 × 122,150.18
  4. Step 4: Simplify right side
    217,620.96x = 36,683,980,539.27
  5. Step 5: Solve for x
    x = 36,683,980,539.27/217,620.96
  6. Step 6: Final answer
    x = 168,568.23

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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.