Home / 217,790.37-300,542.94-122,301.09

Finding the Fourth Proportional to 217,790.37, 300,542.94 and 122,301.09

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Solution

The fourth proportional to 217,790.37, 300,542.94 and 122,301.09 is: 168,771.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,790.37 : 300,542.94 = 122,301.09 : x
  2. Step 2: Convert to fraction form
    217,790.37/300,542.94 = 122,301.09/x
  3. Step 3: Cross multiply
    217,790.37x = 300,542.94 × 122,301.09
  4. Step 4: Simplify right side
    217,790.37x = 36,756,729,153.80
  5. Step 5: Solve for x
    x = 36,756,729,153.80/217,790.37
  6. Step 6: Final answer
    x = 168,771.14

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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.