Home / 411,831.27-618,146.37-198,749.15

Finding the Fourth Proportional to 411,831.27, 618,146.37 and 198,749.15

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Solution

The fourth proportional to 411,831.27, 618,146.37 and 198,749.15 is: 298,316.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,831.27 : 618,146.37 = 198,749.15 : x
  2. Step 2: Convert to fraction form
    411,831.27/618,146.37 = 198,749.15/x
  3. Step 3: Cross multiply
    411,831.27x = 618,146.37 × 198,749.15
  4. Step 4: Simplify right side
    411,831.27x = 122,856,064,840.40
  5. Step 5: Solve for x
    x = 122,856,064,840.40/411,831.27
  6. Step 6: Final answer
    x = 298,316.50

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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.