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Finding the Fourth Proportional to 202,211.68, 279,054.96 and 111,571.60

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Solution

The fourth proportional to 202,211.68, 279,054.96 and 111,571.60 is: 153,970.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,211.68 : 279,054.96 = 111,571.60 : x
  2. Step 2: Convert to fraction form
    202,211.68/279,054.96 = 111,571.60/x
  3. Step 3: Cross multiply
    202,211.68x = 279,054.96 × 111,571.60
  4. Step 4: Simplify right side
    202,211.68x = 31,134,608,375.14
  5. Step 5: Solve for x
    x = 31,134,608,375.14/202,211.68
  6. Step 6: Final answer
    x = 153,970.38

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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.