Finding the Fourth Proportional to 215,720.67, 297,704.69 and 120,228.05
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Solution
The fourth proportional to 215,720.67, 297,704.69 and 120,228.05 is: 165,920.37
Step by Step Solution
- Step 1: Write the proportion equation
215,720.67 : 297,704.69 = 120,228.05 : x - Step 2: Convert to fraction form
215,720.67/297,704.69 = 120,228.05/x - Step 3: Cross multiply
215,720.67x = 297,704.69 × 120,228.05 - Step 4: Simplify right side
215,720.67x = 35,792,453,612.08 - Step 5: Solve for x
x = 35,792,453,612.08/215,720.67 - Step 6: Final answer
x = 165,920.37
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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.