Finding the Fourth Proportional to 428,135.24, 642,245.18 and 158,334.17
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Solution
The fourth proportional to 428,135.24, 642,245.18 and 158,334.17 is: 237,516.90
Step by Step Solution
- Step 1: Write the proportion equation
428,135.24 : 642,245.18 = 158,334.17 : x - Step 2: Convert to fraction form
428,135.24/642,245.18 = 158,334.17/x - Step 3: Cross multiply
428,135.24x = 642,245.18 × 158,334.17 - Step 4: Simplify right side
428,135.24x = 101,689,353,508.90 - Step 5: Solve for x
x = 101,689,353,508.90/428,135.24 - Step 6: Final answer
x = 237,516.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.