Home / 411,831.15-618,146.18-198,749.02

Finding the Fourth Proportional to 411,831.15, 618,146.18 and 198,749.02

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Solution

The fourth proportional to 411,831.15, 618,146.18 and 198,749.02 is: 298,316.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,831.15 : 618,146.18 = 198,749.02 : x
  2. Step 2: Convert to fraction form
    411,831.15/618,146.18 = 198,749.02/x
  3. Step 3: Cross multiply
    411,831.15x = 618,146.18 × 198,749.02
  4. Step 4: Simplify right side
    411,831.15x = 122,855,947,491.74
  5. Step 5: Solve for x
    x = 122,855,947,491.74/411,831.15
  6. Step 6: Final answer
    x = 298,316.31

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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.