Home / 492,761.20-739,141.80-212,825.20

Finding the Fourth Proportional to 492,761.20, 739,141.80 and 212,825.20

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Solution

The fourth proportional to 492,761.20, 739,141.80 and 212,825.20 is: 319,237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,761.20 : 739,141.80 = 212,825.20 : x
  2. Step 2: Convert to fraction form
    492,761.20/739,141.80 = 212,825.20/x
  3. Step 3: Cross multiply
    492,761.20x = 739,141.80 × 212,825.20
  4. Step 4: Simplify right side
    492,761.20x = 157,308,001,413.36
  5. Step 5: Solve for x
    x = 157,308,001,413.36/492,761.20
  6. Step 6: Final answer
    x = 319,237.80

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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.