Home / 378,370,899.91-522,151,120.69-211,097,208.71

Finding the Fourth Proportional to 378,370,899.91, 522,151,120.69 and 211,097,208.71

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Solution

The fourth proportional to 378,370,899.91, 522,151,120.69 and 211,097,208.71 is: 291,313,745.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,370,899.91 : 522,151,120.69 = 211,097,208.71 : x
  2. Step 2: Convert to fraction form
    378,370,899.91/522,151,120.69 = 211,097,208.71/x
  3. Step 3: Cross multiply
    378,370,899.91x = 522,151,120.69 × 211,097,208.71
  4. Step 4: Simplify right side
    378,370,899.91x = 110,224,644,102,284,096
  5. Step 5: Solve for x
    x = 110,224,644,102,284,096/378,370,899.91
  6. Step 6: Final answer
    x = 291,313,745.67

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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.