Home / 318,893.45-478,413.98-108,531.38

Finding the Fourth Proportional to 318,893.45, 478,413.98 and 108,531.38

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Solution

The fourth proportional to 318,893.45, 478,413.98 and 108,531.38 is: 162,822.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,893.45 : 478,413.98 = 108,531.38 : x
  2. Step 2: Convert to fraction form
    318,893.45/478,413.98 = 108,531.38/x
  3. Step 3: Cross multiply
    318,893.45x = 478,413.98 × 108,531.38
  4. Step 4: Simplify right side
    318,893.45x = 51,922,926,525.97
  5. Step 5: Solve for x
    x = 51,922,926,525.97/318,893.45
  6. Step 6: Final answer
    x = 162,822.18

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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.