Finding the Fourth Proportional to 239,286.91, 330,215.97 and 138,743.23
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Solution
The fourth proportional to 239,286.91, 330,215.97 and 138,743.23 is: 191,465.67
Step by Step Solution
- Step 1: Write the proportion equation
239,286.91 : 330,215.97 = 138,743.23 : x - Step 2: Convert to fraction form
239,286.91/330,215.97 = 138,743.23/x - Step 3: Cross multiply
239,286.91x = 330,215.97 × 138,743.23 - Step 4: Simplify right side
239,286.91x = 45,815,229,581.67 - Step 5: Solve for x
x = 45,815,229,581.67/239,286.91 - Step 6: Final answer
x = 191,465.67
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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.