Home / 278,564,767.20-416,855,127.60-242,568,496.80

Finding the Fourth Proportional to 278,564,767.20, 416,855,127.60 and 242,568,496.80

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Solution

The fourth proportional to 278,564,767.20, 416,855,127.60 and 242,568,496.80 is: 362,988,911.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,564,767.20 : 416,855,127.60 = 242,568,496.80 : x
  2. Step 2: Convert to fraction form
    278,564,767.20/416,855,127.60 = 242,568,496.80/x
  3. Step 3: Cross multiply
    278,564,767.20x = 416,855,127.60 × 242,568,496.80
  4. Step 4: Simplify right side
    278,564,767.20x = 101,115,921,685,304,208
  5. Step 5: Solve for x
    x = 101,115,921,685,304,208/278,564,767.20
  6. Step 6: Final answer
    x = 362,988,911.71

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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.