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Finding the Fourth Proportional to 223,639.52, 308,615.49 and 121,662.36

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Solution

The fourth proportional to 223,639.52, 308,615.49 and 121,662.36 is: 167,890.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,639.52 : 308,615.49 = 121,662.36 : x
  2. Step 2: Convert to fraction form
    223,639.52/308,615.49 = 121,662.36/x
  3. Step 3: Cross multiply
    223,639.52x = 308,615.49 × 121,662.36
  4. Step 4: Simplify right side
    223,639.52x = 37,546,889,302.19
  5. Step 5: Solve for x
    x = 37,546,889,302.19/223,639.52
  6. Step 6: Final answer
    x = 167,890.23

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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.