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Finding the Fourth Proportional to 263,477.70, 395,216.55 and 121,322.70

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Solution

The fourth proportional to 263,477.70, 395,216.55 and 121,322.70 is: 181,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,477.70 : 395,216.55 = 121,322.70 : x
  2. Step 2: Convert to fraction form
    263,477.70/395,216.55 = 121,322.70/x
  3. Step 3: Cross multiply
    263,477.70x = 395,216.55 × 121,322.70
  4. Step 4: Simplify right side
    263,477.70x = 47,948,738,930.69
  5. Step 5: Solve for x
    x = 47,948,738,930.69/263,477.70
  6. Step 6: Final answer
    x = 181,984.05

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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.