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Finding the Fourth Proportional to 223,920.63, 308,990.12 and 133,261.97

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Solution

The fourth proportional to 223,920.63, 308,990.12 and 133,261.97 is: 183,889.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,920.63 : 308,990.12 = 133,261.97 : x
  2. Step 2: Convert to fraction form
    223,920.63/308,990.12 = 133,261.97/x
  3. Step 3: Cross multiply
    223,920.63x = 308,990.12 × 133,261.97
  4. Step 4: Simplify right side
    223,920.63x = 41,176,629,890.48
  5. Step 5: Solve for x
    x = 41,176,629,890.48/223,920.63
  6. Step 6: Final answer
    x = 183,889.40

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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.