Finding the Fourth Proportional to 221,872.13, 306,183.48 and 121,270.13
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Solution
The fourth proportional to 221,872.13, 306,183.48 and 121,270.13 is: 167,352.75
Step by Step Solution
- Step 1: Write the proportion equation
221,872.13 : 306,183.48 = 121,270.13 : x - Step 2: Convert to fraction form
221,872.13/306,183.48 = 121,270.13/x - Step 3: Cross multiply
221,872.13x = 306,183.48 × 121,270.13 - Step 4: Simplify right side
221,872.13x = 37,130,910,423.45 - Step 5: Solve for x
x = 37,130,910,423.45/221,872.13 - Step 6: Final answer
x = 167,352.75
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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.