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Finding the Fourth Proportional to 147,999.80, 222,015.90 and 143,334.20

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Solution

The fourth proportional to 147,999.80, 222,015.90 and 143,334.20 is: 215,016.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,999.80 : 222,015.90 = 143,334.20 : x
  2. Step 2: Convert to fraction form
    147,999.80/222,015.90 = 143,334.20/x
  3. Step 3: Cross multiply
    147,999.80x = 222,015.90 × 143,334.20
  4. Step 4: Simplify right side
    147,999.80x = 31,822,471,413.78
  5. Step 5: Solve for x
    x = 31,822,471,413.78/147,999.80
  6. Step 6: Final answer
    x = 215,016.99

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1.5x scale

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.