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Finding the Fourth Proportional to 219,792.76, 303,321.18 and 143,361.88

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Solution

The fourth proportional to 219,792.76, 303,321.18 and 143,361.88 is: 197,844.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,792.76 : 303,321.18 = 143,361.88 : x
  2. Step 2: Convert to fraction form
    219,792.76/303,321.18 = 143,361.88/x
  3. Step 3: Cross multiply
    219,792.76x = 303,321.18 × 143,361.88
  4. Step 4: Simplify right side
    219,792.76x = 43,484,694,608.62
  5. Step 5: Solve for x
    x = 43,484,694,608.62/219,792.76
  6. Step 6: Final answer
    x = 197,844.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.