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Finding the Fourth Proportional to 485,596.44, 728,480.80 and 148,629.64

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Solution

The fourth proportional to 485,596.44, 728,480.80 and 148,629.64 is: 222,970.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,596.44 : 728,480.80 = 148,629.64 : x
  2. Step 2: Convert to fraction form
    485,596.44/728,480.80 = 148,629.64/x
  3. Step 3: Cross multiply
    485,596.44x = 728,480.80 × 148,629.64
  4. Step 4: Simplify right side
    485,596.44x = 108,273,839,050.91
  5. Step 5: Solve for x
    x = 108,273,839,050.91/485,596.44
  6. Step 6: Final answer
    x = 222,970.83

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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.