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Finding the Fourth Proportional to 263,433.60, 395,140.80 and 105,619.20

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Solution

The fourth proportional to 263,433.60, 395,140.80 and 105,619.20 is: 158,424.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,433.60 : 395,140.80 = 105,619.20 : x
  2. Step 2: Convert to fraction form
    263,433.60/395,140.80 = 105,619.20/x
  3. Step 3: Cross multiply
    263,433.60x = 395,140.80 × 105,619.20
  4. Step 4: Simplify right side
    263,433.60x = 41,734,455,183.36
  5. Step 5: Solve for x
    x = 41,734,455,183.36/263,433.60
  6. Step 6: Final answer
    x = 158,424.95

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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.