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Finding the Fourth Proportional to 143,305.72, 214,959.09 and 43,466.78

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Solution

The fourth proportional to 143,305.72, 214,959.09 and 43,466.78 is: 65,200.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,305.72 : 214,959.09 = 43,466.78 : x
  2. Step 2: Convert to fraction form
    143,305.72/214,959.09 = 43,466.78/x
  3. Step 3: Cross multiply
    143,305.72x = 214,959.09 × 43,466.78
  4. Step 4: Simplify right side
    143,305.72x = 9,343,579,474.03
  5. Step 5: Solve for x
    x = 9,343,579,474.03/143,305.72
  6. Step 6: Final answer
    x = 65,200.32

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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.