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Finding the Fourth Proportional to 219,989.33, 303,589.58 and 143,557.32

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Solution

The fourth proportional to 219,989.33, 303,589.58 and 143,557.32 is: 198,111.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,989.33 : 303,589.58 = 143,557.32 : x
  2. Step 2: Convert to fraction form
    219,989.33/303,589.58 = 143,557.32/x
  3. Step 3: Cross multiply
    219,989.33x = 303,589.58 × 143,557.32
  4. Step 4: Simplify right side
    219,989.33x = 43,582,505,766.94
  5. Step 5: Solve for x
    x = 43,582,505,766.94/219,989.33
  6. Step 6: Final answer
    x = 198,111.91

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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.