Home / 378,413.36-522,213.96-208,653.52

Finding the Fourth Proportional to 378,413.36, 522,213.96 and 208,653.52

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Solution

The fourth proportional to 378,413.36, 522,213.96 and 208,653.52 is: 287,943.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,413.36 : 522,213.96 = 208,653.52 : x
  2. Step 2: Convert to fraction form
    378,413.36/522,213.96 = 208,653.52/x
  3. Step 3: Cross multiply
    378,413.36x = 522,213.96 × 208,653.52
  4. Step 4: Simplify right side
    378,413.36x = 108,961,780,947.14
  5. Step 5: Solve for x
    x = 108,961,780,947.14/378,413.36
  6. Step 6: Final answer
    x = 287,943.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.