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Finding the Fourth Proportional to 279,413.88, 419,124.68 and 79,734.24

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Solution

The fourth proportional to 279,413.88, 419,124.68 and 79,734.24 is: 119,602.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,413.88 : 419,124.68 = 79,734.24 : x
  2. Step 2: Convert to fraction form
    279,413.88/419,124.68 = 79,734.24/x
  3. Step 3: Cross multiply
    279,413.88x = 419,124.68 × 79,734.24
  4. Step 4: Simplify right side
    279,413.88x = 33,418,587,825.04
  5. Step 5: Solve for x
    x = 33,418,587,825.04/279,413.88
  6. Step 6: Final answer
    x = 119,602.46

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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.