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Finding the Fourth Proportional to 208,831.80, 313,247.70 and 96,511.80

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Solution

The fourth proportional to 208,831.80, 313,247.70 and 96,511.80 is: 144,767.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,831.80 : 313,247.70 = 96,511.80 : x
  2. Step 2: Convert to fraction form
    208,831.80/313,247.70 = 96,511.80/x
  3. Step 3: Cross multiply
    208,831.80x = 313,247.70 × 96,511.80
  4. Step 4: Simplify right side
    208,831.80x = 30,232,099,372.86
  5. Step 5: Solve for x
    x = 30,232,099,372.86/208,831.80
  6. Step 6: Final answer
    x = 144,767.70

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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.