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Finding the Fourth Proportional to 223,243.92, 308,076.93 and 121,269.40

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Solution

The fourth proportional to 223,243.92, 308,076.93 and 121,269.40 is: 167,351.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,243.92 : 308,076.93 = 121,269.40 : x
  2. Step 2: Convert to fraction form
    223,243.92/308,076.93 = 121,269.40/x
  3. Step 3: Cross multiply
    223,243.92x = 308,076.93 × 121,269.40
  4. Step 4: Simplify right side
    223,243.92x = 37,360,303,684.75
  5. Step 5: Solve for x
    x = 37,360,303,684.75/223,243.92
  6. Step 6: Final answer
    x = 167,351.94

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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.