Home / 411,831.97-618,146.43-198,749.88

Finding the Fourth Proportional to 411,831.97, 618,146.43 and 198,749.88

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Solution

The fourth proportional to 411,831.97, 618,146.43 and 198,749.88 is: 298,317.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,831.97 : 618,146.43 = 198,749.88 : x
  2. Step 2: Convert to fraction form
    411,831.97/618,146.43 = 198,749.88/x
  3. Step 3: Cross multiply
    411,831.97x = 618,146.43 × 198,749.88
  4. Step 4: Simplify right side
    411,831.97x = 122,856,526,466.88
  5. Step 5: Solve for x
    x = 122,856,526,466.88/411,831.97
  6. Step 6: Final answer
    x = 298,317.12

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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.