Finding the Fourth Proportional to 216,874.18, 299,218.17 and 121,365.70
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Solution
The fourth proportional to 216,874.18, 299,218.17 and 121,365.70 is: 167,446.50
Step by Step Solution
- Step 1: Write the proportion equation
216,874.18 : 299,218.17 = 121,365.70 : x - Step 2: Convert to fraction form
216,874.18/299,218.17 = 121,365.70/x - Step 3: Cross multiply
216,874.18x = 299,218.17 × 121,365.70 - Step 4: Simplify right side
216,874.18x = 36,314,822,654.77 - Step 5: Solve for x
x = 36,314,822,654.77/216,874.18 - Step 6: Final answer
x = 167,446.50
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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.