Finding the Fourth Proportional to 216,906.08, 299,330.40 and 121,412.80
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Solution
The fourth proportional to 216,906.08, 299,330.40 and 121,412.80 is: 167,549.67
Step by Step Solution
- Step 1: Write the proportion equation
216,906.08 : 299,330.40 = 121,412.80 : x - Step 2: Convert to fraction form
216,906.08/299,330.40 = 121,412.80/x - Step 3: Cross multiply
216,906.08x = 299,330.40 × 121,412.80 - Step 4: Simplify right side
216,906.08x = 36,342,541,989.12 - Step 5: Solve for x
x = 36,342,541,989.12/216,906.08 - Step 6: Final answer
x = 167,549.67
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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.