Home / 286,143.06-428,379.60-214,413.93

Finding the Fourth Proportional to 286,143.06, 428,379.60 and 214,413.93

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Solution

The fourth proportional to 286,143.06, 428,379.60 and 214,413.93 is: 320,995.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,143.06 : 428,379.60 = 214,413.93 : x
  2. Step 2: Convert to fraction form
    286,143.06/428,379.60 = 214,413.93/x
  3. Step 3: Cross multiply
    286,143.06x = 428,379.60 × 214,413.93
  4. Step 4: Simplify right side
    286,143.06x = 91,850,553,567.83
  5. Step 5: Solve for x
    x = 91,850,553,567.83/286,143.06
  6. Step 6: Final answer
    x = 320,995.22

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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.