Finding the Fourth Proportional to 221,717.36, 332,565.92 and 81,465.68
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Solution
The fourth proportional to 221,717.36, 332,565.92 and 81,465.68 is: 122,194.80
Step by Step Solution
- Step 1: Write the proportion equation
221,717.36 : 332,565.92 = 81,465.68 : x - Step 2: Convert to fraction form
221,717.36/332,565.92 = 81,465.68/x - Step 3: Cross multiply
221,717.36x = 332,565.92 × 81,465.68 - Step 4: Simplify right side
221,717.36x = 27,092,708,817.63 - Step 5: Solve for x
x = 27,092,708,817.63/221,717.36 - Step 6: Final answer
x = 122,194.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.