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Finding the Fourth Proportional to 279,413.40, 419,115.98 and 69,051.32

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Solution

The fourth proportional to 279,413.40, 419,115.98 and 69,051.32 is: 103,575.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,413.40 : 419,115.98 = 69,051.32 : x
  2. Step 2: Convert to fraction form
    279,413.40/419,115.98 = 69,051.32/x
  3. Step 3: Cross multiply
    279,413.40x = 419,115.98 × 69,051.32
  4. Step 4: Simplify right side
    279,413.40x = 28,940,511,652.09
  5. Step 5: Solve for x
    x = 28,940,511,652.09/279,413.40
  6. Step 6: Final answer
    x = 103,575.96

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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.