Home / 206,579.03-309,678.39-80,303.27

Finding the Fourth Proportional to 206,579.03, 309,678.39 and 80,303.27

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Solution

The fourth proportional to 206,579.03, 309,678.39 and 80,303.27 is: 120,380.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,579.03 : 309,678.39 = 80,303.27 : x
  2. Step 2: Convert to fraction form
    206,579.03/309,678.39 = 80,303.27/x
  3. Step 3: Cross multiply
    206,579.03x = 309,678.39 × 80,303.27
  4. Step 4: Simplify right side
    206,579.03x = 24,868,185,816.94
  5. Step 5: Solve for x
    x = 24,868,185,816.94/206,579.03
  6. Step 6: Final answer
    x = 120,380.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.