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Finding the Fourth Proportional to 323,764.24, 485,529.72 and 136,790.32

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Solution

The fourth proportional to 323,764.24, 485,529.72 and 136,790.32 is: 205,136.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,764.24 : 485,529.72 = 136,790.32 : x
  2. Step 2: Convert to fraction form
    323,764.24/485,529.72 = 136,790.32/x
  3. Step 3: Cross multiply
    323,764.24x = 485,529.72 × 136,790.32
  4. Step 4: Simplify right side
    323,764.24x = 66,415,765,768.31
  5. Step 5: Solve for x
    x = 66,415,765,768.31/323,764.24
  6. Step 6: Final answer
    x = 205,136.20

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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.