Home / 208,831.20-313,028.10-82,422.60

Finding the Fourth Proportional to 208,831.20, 313,028.10 and 82,422.60

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Solution

The fourth proportional to 208,831.20, 313,028.10 and 82,422.60 is: 123,547.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,831.20 : 313,028.10 = 82,422.60 : x
  2. Step 2: Convert to fraction form
    208,831.20/313,028.10 = 82,422.60/x
  3. Step 3: Cross multiply
    208,831.20x = 313,028.10 × 82,422.60
  4. Step 4: Simplify right side
    208,831.20x = 25,800,589,875.06
  5. Step 5: Solve for x
    x = 25,800,589,875.06/208,831.20
  6. Step 6: Final answer
    x = 123,547.58

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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.