Finding the Fourth Proportional to 239,620.56, 330,616.94 and 157,939.76
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Solution
The fourth proportional to 239,620.56, 330,616.94 and 157,939.76 is: 217,917.68
Step by Step Solution
- Step 1: Write the proportion equation
239,620.56 : 330,616.94 = 157,939.76 : x - Step 2: Convert to fraction form
239,620.56/330,616.94 = 157,939.76/x - Step 3: Cross multiply
239,620.56x = 330,616.94 × 157,939.76 - Step 4: Simplify right side
239,620.56x = 52,217,557,712.75 - Step 5: Solve for x
x = 52,217,557,712.75/239,620.56 - Step 6: Final answer
x = 217,917.68
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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.