Home / 209,009,028.66-288,434,562.57-114,928,137.78

Finding the Fourth Proportional to 209,009,028.66, 288,434,562.57 and 114,928,137.78

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Solution

The fourth proportional to 209,009,028.66, 288,434,562.57 and 114,928,137.78 is: 158,601,986.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,009,028.66 : 288,434,562.57 = 114,928,137.78 : x
  2. Step 2: Convert to fraction form
    209,009,028.66/288,434,562.57 = 114,928,137.78/x
  3. Step 3: Cross multiply
    209,009,028.66x = 288,434,562.57 × 114,928,137.78
  4. Step 4: Simplify right side
    209,009,028.66x = 33,149,247,147,558,992
  5. Step 5: Solve for x
    x = 33,149,247,147,558,992/209,009,028.66
  6. Step 6: Final answer
    x = 158,601,986.53

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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.