Home / 412,979.76-619,395.69-109,375.95

Finding the Fourth Proportional to 412,979.76, 619,395.69 and 109,375.95

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Solution

The fourth proportional to 412,979.76, 619,395.69 and 109,375.95 is: 164,044.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,979.76 : 619,395.69 = 109,375.95 : x
  2. Step 2: Convert to fraction form
    412,979.76/619,395.69 = 109,375.95/x
  3. Step 3: Cross multiply
    412,979.76x = 619,395.69 × 109,375.95
  4. Step 4: Simplify right side
    412,979.76x = 67,746,992,019.66
  5. Step 5: Solve for x
    x = 67,746,992,019.66/412,979.76
  6. Step 6: Final answer
    x = 164,044.34

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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.