Finding the Fourth Proportional to 221,874.28, 306,186.66 and 121,272.28
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Solution
The fourth proportional to 221,874.28, 306,186.66 and 121,272.28 is: 167,355.83
Step by Step Solution
- Step 1: Write the proportion equation
221,874.28 : 306,186.66 = 121,272.28 : x - Step 2: Convert to fraction form
221,874.28/306,186.66 = 121,272.28/x - Step 3: Cross multiply
221,874.28x = 306,186.66 × 121,272.28 - Step 4: Simplify right side
221,874.28x = 37,131,954,363.78 - Step 5: Solve for x
x = 37,131,954,363.78/221,874.28 - Step 6: Final answer
x = 167,355.83
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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.