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Finding the Fourth Proportional to 247,831.75, 371,728.50 and 79,369.71

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Solution

The fourth proportional to 247,831.75, 371,728.50 and 79,369.71 is: 119,048.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,831.75 : 371,728.50 = 79,369.71 : x
  2. Step 2: Convert to fraction form
    247,831.75/371,728.50 = 79,369.71/x
  3. Step 3: Cross multiply
    247,831.75x = 371,728.50 × 79,369.71
  4. Step 4: Simplify right side
    247,831.75x = 29,503,983,243.74
  5. Step 5: Solve for x
    x = 29,503,983,243.74/247,831.75
  6. Step 6: Final answer
    x = 119,048.44

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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.