Home / 449,636.16-674,786.86-212,979.38

Finding the Fourth Proportional to 449,636.16, 674,786.86 and 212,979.38

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Solution

The fourth proportional to 449,636.16, 674,786.86 and 212,979.38 is: 319,626.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,636.16 : 674,786.86 = 212,979.38 : x
  2. Step 2: Convert to fraction form
    449,636.16/674,786.86 = 212,979.38/x
  3. Step 3: Cross multiply
    449,636.16x = 674,786.86 × 212,979.38
  4. Step 4: Simplify right side
    449,636.16x = 143,715,687,074.95
  5. Step 5: Solve for x
    x = 143,715,687,074.95/449,636.16
  6. Step 6: Final answer
    x = 319,626.62

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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.