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Finding the Fourth Proportional to 210,874.20, 315,961.37 and 148,413.48

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Solution

The fourth proportional to 210,874.20, 315,961.37 and 148,413.48 is: 222,373.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,874.20 : 315,961.37 = 148,413.48 : x
  2. Step 2: Convert to fraction form
    210,874.20/315,961.37 = 148,413.48/x
  3. Step 3: Cross multiply
    210,874.20x = 315,961.37 × 148,413.48
  4. Step 4: Simplify right side
    210,874.20x = 46,892,925,725.20
  5. Step 5: Solve for x
    x = 46,892,925,725.20/210,874.20
  6. Step 6: Final answer
    x = 222,373.94

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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.