Home / 355,728,642.88-490,920,868.07-196,958,768.87

Finding the Fourth Proportional to 355,728,642.88, 490,920,868.07 and 196,958,768.87

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Solution

The fourth proportional to 355,728,642.88, 490,920,868.07 and 196,958,768.87 is: 271,811,594.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,728,642.88 : 490,920,868.07 = 196,958,768.87 : x
  2. Step 2: Convert to fraction form
    355,728,642.88/490,920,868.07 = 196,958,768.87/x
  3. Step 3: Cross multiply
    355,728,642.88x = 490,920,868.07 × 196,958,768.87
  4. Step 4: Simplify right side
    355,728,642.88x = 96,691,169,787,658,896
  5. Step 5: Solve for x
    x = 96,691,169,787,658,896/355,728,642.88
  6. Step 6: Final answer
    x = 271,811,594.94

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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.