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Finding the Fourth Proportional to 223,270.60, 308,112.20 and 121,295.25

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Solution

The fourth proportional to 223,270.60, 308,112.20 and 121,295.25 is: 167,386.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,270.60 : 308,112.20 = 121,295.25 : x
  2. Step 2: Convert to fraction form
    223,270.60/308,112.20 = 121,295.25/x
  3. Step 3: Cross multiply
    223,270.60x = 308,112.20 × 121,295.25
  4. Step 4: Simplify right side
    223,270.60x = 37,372,546,327.05
  5. Step 5: Solve for x
    x = 37,372,546,327.05/223,270.60
  6. Step 6: Final answer
    x = 167,386.78

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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.