Home / 306,829.89-423,556.29-206,286.21

Finding the Fourth Proportional to 306,829.89, 423,556.29 and 206,286.21

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Solution

The fourth proportional to 306,829.89, 423,556.29 and 206,286.21 is: 284,763.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,829.89 : 423,556.29 = 206,286.21 : x
  2. Step 2: Convert to fraction form
    306,829.89/423,556.29 = 206,286.21/x
  3. Step 3: Cross multiply
    306,829.89x = 423,556.29 × 206,286.21
  4. Step 4: Simplify right side
    306,829.89x = 87,373,821,785.76
  5. Step 5: Solve for x
    x = 87,373,821,785.76/306,829.89
  6. Step 6: Final answer
    x = 284,763.07

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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.