Home / 279,938,512.40-419,907,768.60-126,589,571.60

Finding the Fourth Proportional to 279,938,512.40, 419,907,768.60 and 126,589,571.60

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Solution

The fourth proportional to 279,938,512.40, 419,907,768.60 and 126,589,571.60 is: 189,884,357.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,938,512.40 : 419,907,768.60 = 126,589,571.60 : x
  2. Step 2: Convert to fraction form
    279,938,512.40/419,907,768.60 = 126,589,571.60/x
  3. Step 3: Cross multiply
    279,938,512.40x = 419,907,768.60 × 126,589,571.60
  4. Step 4: Simplify right side
    279,938,512.40x = 53,155,944,538,585,936
  5. Step 5: Solve for x
    x = 53,155,944,538,585,936/279,938,512.40
  6. Step 6: Final answer
    x = 189,884,357.40

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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.