Home / 297,979.90-410,939.83-221,690.05

Finding the Fourth Proportional to 297,979.90, 410,939.83 and 221,690.05

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Solution

The fourth proportional to 297,979.90, 410,939.83 and 221,690.05 is: 305,729.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,979.90 : 410,939.83 = 221,690.05 : x
  2. Step 2: Convert to fraction form
    297,979.90/410,939.83 = 221,690.05/x
  3. Step 3: Cross multiply
    297,979.90x = 410,939.83 × 221,690.05
  4. Step 4: Simplify right side
    297,979.90x = 91,101,270,709.45
  5. Step 5: Solve for x
    x = 91,101,270,709.45/297,979.90
  6. Step 6: Final answer
    x = 305,729.59

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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.