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Finding the Fourth Proportional to 263,609.20, 395,413.80 and 121,454.20

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Solution

The fourth proportional to 263,609.20, 395,413.80 and 121,454.20 is: 182,181.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,609.20 : 395,413.80 = 121,454.20 : x
  2. Step 2: Convert to fraction form
    263,609.20/395,413.80 = 121,454.20/x
  3. Step 3: Cross multiply
    263,609.20x = 395,413.80 × 121,454.20
  4. Step 4: Simplify right side
    263,609.20x = 48,024,666,747.96
  5. Step 5: Solve for x
    x = 48,024,666,747.96/263,609.20
  6. Step 6: Final answer
    x = 182,181.30

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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.