Home / 388,135,493.39-535,622,918.55-211,922,942.60

Finding the Fourth Proportional to 388,135,493.39, 535,622,918.55 and 211,922,942.60

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Solution

The fourth proportional to 388,135,493.39, 535,622,918.55 and 211,922,942.60 is: 292,451,442.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,135,493.39 : 535,622,918.55 = 211,922,942.60 : x
  2. Step 2: Convert to fraction form
    388,135,493.39/535,622,918.55 = 211,922,942.60/x
  3. Step 3: Cross multiply
    388,135,493.39x = 535,622,918.55 × 211,922,942.60
  4. Step 4: Simplify right side
    388,135,493.39x = 113,510,785,023,116,128
  5. Step 5: Solve for x
    x = 113,510,785,023,116,128/388,135,493.39
  6. Step 6: Final answer
    x = 292,451,442.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.