Home / 306,939.20-423,641.41-206,278.88

Finding the Fourth Proportional to 306,939.20, 423,641.41 and 206,278.88

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Solution

The fourth proportional to 306,939.20, 423,641.41 and 206,278.88 is: 284,708.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,939.20 : 423,641.41 = 206,278.88 : x
  2. Step 2: Convert to fraction form
    306,939.20/423,641.41 = 206,278.88/x
  3. Step 3: Cross multiply
    306,939.20x = 423,641.41 × 206,278.88
  4. Step 4: Simplify right side
    306,939.20x = 87,388,272,942.52
  5. Step 5: Solve for x
    x = 87,388,272,942.52/306,939.20
  6. Step 6: Final answer
    x = 284,708.74

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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.