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Finding the Fourth Proportional to 511,726.67, 767,261.55 and 212,413.85

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Solution

The fourth proportional to 511,726.67, 767,261.55 and 212,413.85 is: 318,484.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,726.67 : 767,261.55 = 212,413.85 : x
  2. Step 2: Convert to fraction form
    511,726.67/767,261.55 = 212,413.85/x
  3. Step 3: Cross multiply
    511,726.67x = 767,261.55 × 212,413.85
  4. Step 4: Simplify right side
    511,726.67x = 162,976,978,730.40
  5. Step 5: Solve for x
    x = 162,976,978,730.40/511,726.67
  6. Step 6: Final answer
    x = 318,484.43

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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.