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Finding the Fourth Proportional to 208,044.66, 311,879.66 and 74,831.28

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Solution

The fourth proportional to 208,044.66, 311,879.66 and 74,831.28 is: 112,179.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,044.66 : 311,879.66 = 74,831.28 : x
  2. Step 2: Convert to fraction form
    208,044.66/311,879.66 = 74,831.28/x
  3. Step 3: Cross multiply
    208,044.66x = 311,879.66 × 74,831.28
  4. Step 4: Simplify right side
    208,044.66x = 23,338,354,163.76
  5. Step 5: Solve for x
    x = 23,338,354,163.76/208,044.66
  6. Step 6: Final answer
    x = 112,179.54

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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.