Home / 278,564,771.20-416,855,133.60-242,568,500.80

Finding the Fourth Proportional to 278,564,771.20, 416,855,133.60 and 242,568,500.80

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Solution

The fourth proportional to 278,564,771.20, 416,855,133.60 and 242,568,500.80 is: 362,988,917.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,564,771.20 : 416,855,133.60 = 242,568,500.80 : x
  2. Step 2: Convert to fraction form
    278,564,771.20/416,855,133.60 = 242,568,500.80/x
  3. Step 3: Cross multiply
    278,564,771.20x = 416,855,133.60 × 242,568,500.80
  4. Step 4: Simplify right side
    278,564,771.20x = 101,115,924,808,135,712
  5. Step 5: Solve for x
    x = 101,115,924,808,135,712/278,564,771.20
  6. Step 6: Final answer
    x = 362,988,917.70

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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.