Home / 378,453,415.76-522,265,733.39-208,907,698.38

Finding the Fourth Proportional to 378,453,415.76, 522,265,733.39 and 208,907,698.38

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Solution

The fourth proportional to 378,453,415.76, 522,265,733.39 and 208,907,698.38 is: 288,292,634.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,453,415.76 : 522,265,733.39 = 208,907,698.38 : x
  2. Step 2: Convert to fraction form
    378,453,415.76/522,265,733.39 = 208,907,698.38/x
  3. Step 3: Cross multiply
    378,453,415.76x = 522,265,733.39 × 208,907,698.38
  4. Step 4: Simplify right side
    378,453,415.76x = 109,105,332,304,203,072
  5. Step 5: Solve for x
    x = 109,105,332,304,203,072/378,453,415.76
  6. Step 6: Final answer
    x = 288,292,634.61

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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.