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Finding the Fourth Proportional to 219,990.33, 303,590.96 and 143,558.32

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Solution

The fourth proportional to 219,990.33, 303,590.96 and 143,558.32 is: 198,113.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,990.33 : 303,590.96 = 143,558.32 : x
  2. Step 2: Convert to fraction form
    219,990.33/303,590.96 = 143,558.32/x
  3. Step 3: Cross multiply
    219,990.33x = 303,590.96 × 143,558.32
  4. Step 4: Simplify right side
    219,990.33x = 43,583,008,184.79
  5. Step 5: Solve for x
    x = 43,583,008,184.79/219,990.33
  6. Step 6: Final answer
    x = 198,113.29

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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.