Finding the Fourth Proportional to 420,478.11, 630,800.37 and 154,240.92
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Solution
The fourth proportional to 420,478.11, 630,800.37 and 154,240.92 is: 231,391.90
Step by Step Solution
- Step 1: Write the proportion equation
420,478.11 : 630,800.37 = 154,240.92 : x - Step 2: Convert to fraction form
420,478.11/630,800.37 = 154,240.92/x - Step 3: Cross multiply
420,478.11x = 630,800.37 × 154,240.92 - Step 4: Simplify right side
420,478.11x = 97,295,229,405.14 - Step 5: Solve for x
x = 97,295,229,405.14/420,478.11 - Step 6: Final answer
x = 231,391.90
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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.