Home / 215,413.64-323,120.64-103,067.36

Finding the Fourth Proportional to 215,413.64, 323,120.64 and 103,067.36

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Solution

The fourth proportional to 215,413.64, 323,120.64 and 103,067.36 is: 154,601.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,413.64 : 323,120.64 = 103,067.36 : x
  2. Step 2: Convert to fraction form
    215,413.64/323,120.64 = 103,067.36/x
  3. Step 3: Cross multiply
    215,413.64x = 323,120.64 × 103,067.36
  4. Step 4: Simplify right side
    215,413.64x = 33,303,191,326.31
  5. Step 5: Solve for x
    x = 33,303,191,326.31/215,413.64
  6. Step 6: Final answer
    x = 154,601.13

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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.