Home / 206,472.14-309,499.04-139,919

Finding the Fourth Proportional to 206,472.14, 309,499.04 and 139,919

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Solution

The fourth proportional to 206,472.14, 309,499.04 and 139,919 is: 209,736.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,472.14 : 309,499.04 = 139,919 : x
  2. Step 2: Convert to fraction form
    206,472.14/309,499.04 = 139,919/x
  3. Step 3: Cross multiply
    206,472.14x = 309,499.04 × 139,919
  4. Step 4: Simplify right side
    206,472.14x = 43,304,796,177.76
  5. Step 5: Solve for x
    x = 43,304,796,177.76/206,472.14
  6. Step 6: Final answer
    x = 209,736.75

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1.5x scale

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.