Home / 389,991-584,912.52-190,110.36

Finding the Fourth Proportional to 389,991, 584,912.52 and 190,110.36

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Solution

The fourth proportional to 389,991, 584,912.52 and 190,110.36 is: 285,129.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,991 : 584,912.52 = 190,110.36 : x
  2. Step 2: Convert to fraction form
    389,991/584,912.52 = 190,110.36/x
  3. Step 3: Cross multiply
    389,991x = 584,912.52 × 190,110.36
  4. Step 4: Simplify right side
    389,991x = 111,197,929,745.71
  5. Step 5: Solve for x
    x = 111,197,929,745.71/389,991
  6. Step 6: Final answer
    x = 285,129.48

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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.