Finding the Fourth Proportional to 216,387.31, 298,608.99 and 120,894.73
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Solution
The fourth proportional to 216,387.31, 298,608.99 and 120,894.73 is: 166,831.66
Step by Step Solution
- Step 1: Write the proportion equation
216,387.31 : 298,608.99 = 120,894.73 : x - Step 2: Convert to fraction form
216,387.31/298,608.99 = 120,894.73/x - Step 3: Cross multiply
216,387.31x = 298,608.99 × 120,894.73 - Step 4: Simplify right side
216,387.31x = 36,100,253,221.62 - Step 5: Solve for x
x = 36,100,253,221.62/216,387.31 - Step 6: Final answer
x = 166,831.66
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1.5x scale
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.