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Finding the Fourth Proportional to 286,262.95, 428,740.41 and 136,608.33

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Solution

The fourth proportional to 286,262.95, 428,740.41 and 136,608.33 is: 204,600.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,262.95 : 428,740.41 = 136,608.33 : x
  2. Step 2: Convert to fraction form
    286,262.95/428,740.41 = 136,608.33/x
  3. Step 3: Cross multiply
    286,262.95x = 428,740.41 × 136,608.33
  4. Step 4: Simplify right side
    286,262.95x = 58,569,511,413.62
  5. Step 5: Solve for x
    x = 58,569,511,413.62/286,262.95
  6. Step 6: Final answer
    x = 204,600.39

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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.