Finding the Fourth Proportional to 216,218.76, 298,379.10 and 120,727.08
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Solution
The fourth proportional to 216,218.76, 298,379.10 and 120,727.08 is: 166,601.81
Step by Step Solution
- Step 1: Write the proportion equation
216,218.76 : 298,379.10 = 120,727.08 : x - Step 2: Convert to fraction form
216,218.76/298,379.10 = 120,727.08/x - Step 3: Cross multiply
216,218.76x = 298,379.10 × 120,727.08 - Step 4: Simplify right side
216,218.76x = 36,022,437,476.03 - Step 5: Solve for x
x = 36,022,437,476.03/216,218.76 - Step 6: Final answer
x = 166,601.81
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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.