Home / 218,961.08-328,413.32-69,216.48

Finding the Fourth Proportional to 218,961.08, 328,413.32 and 69,216.48

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Solution

The fourth proportional to 218,961.08, 328,413.32 and 69,216.48 is: 103,815.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,961.08 : 328,413.32 = 69,216.48 : x
  2. Step 2: Convert to fraction form
    218,961.08/328,413.32 = 69,216.48/x
  3. Step 3: Cross multiply
    218,961.08x = 328,413.32 × 69,216.48
  4. Step 4: Simplify right side
    218,961.08x = 22,731,613,649.43
  5. Step 5: Solve for x
    x = 22,731,613,649.43/218,961.08
  6. Step 6: Final answer
    x = 103,815.77

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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.