Home / 411,831.40-618,146.56-198,749.26

Finding the Fourth Proportional to 411,831.40, 618,146.56 and 198,749.26

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Solution

The fourth proportional to 411,831.40, 618,146.56 and 198,749.26 is: 298,316.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,831.40 : 618,146.56 = 198,749.26 : x
  2. Step 2: Convert to fraction form
    411,831.40/618,146.56 = 198,749.26/x
  3. Step 3: Cross multiply
    411,831.40x = 618,146.56 × 198,749.26
  4. Step 4: Simplify right side
    411,831.40x = 122,856,171,371.55
  5. Step 5: Solve for x
    x = 122,856,171,371.55/411,831.40
  6. Step 6: Final answer
    x = 298,316.67

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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.