Home / 278,564,768.70-416,855,129.85-242,568,498.30

Finding the Fourth Proportional to 278,564,768.70, 416,855,129.85 and 242,568,498.30

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Solution

The fourth proportional to 278,564,768.70, 416,855,129.85 and 242,568,498.30 is: 362,988,913.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,564,768.70 : 416,855,129.85 = 242,568,498.30 : x
  2. Step 2: Convert to fraction form
    278,564,768.70/416,855,129.85 = 242,568,498.30/x
  3. Step 3: Cross multiply
    278,564,768.70x = 416,855,129.85 × 242,568,498.30
  4. Step 4: Simplify right side
    278,564,768.70x = 101,115,922,856,366,016
  5. Step 5: Solve for x
    x = 101,115,922,856,366,016/278,564,768.70
  6. Step 6: Final answer
    x = 362,988,913.95

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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.