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Finding the Fourth Proportional to 263,395.91, 394,933.86 and 103,280.01

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Solution

The fourth proportional to 263,395.91, 394,933.86 and 103,280.01 is: 154,857.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,395.91 : 394,933.86 = 103,280.01 : x
  2. Step 2: Convert to fraction form
    263,395.91/394,933.86 = 103,280.01/x
  3. Step 3: Cross multiply
    263,395.91x = 394,933.86 × 103,280.01
  4. Step 4: Simplify right side
    263,395.91x = 40,788,772,087.35
  5. Step 5: Solve for x
    x = 40,788,772,087.35/263,395.91
  6. Step 6: Final answer
    x = 154,857.27

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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.