Home / 217,621.21-300,319.03-122,150.43

Finding the Fourth Proportional to 217,621.21, 300,319.03 and 122,150.43

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Solution

The fourth proportional to 217,621.21, 300,319.03 and 122,150.43 is: 168,568.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,621.21 : 300,319.03 = 122,150.43 : x
  2. Step 2: Convert to fraction form
    217,621.21/300,319.03 = 122,150.43/x
  3. Step 3: Cross multiply
    217,621.21x = 300,319.03 × 122,150.43
  4. Step 4: Simplify right side
    217,621.21x = 36,684,098,651.68
  5. Step 5: Solve for x
    x = 36,684,098,651.68/217,621.21
  6. Step 6: Final answer
    x = 168,568.58

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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.