Finding the Fourth Proportional to 420,517.06, 630,872.19 and 121,000.12
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Solution
The fourth proportional to 420,517.06, 630,872.19 and 121,000.12 is: 181,527.97
Step by Step Solution
- Step 1: Write the proportion equation
420,517.06 : 630,872.19 = 121,000.12 : x - Step 2: Convert to fraction form
420,517.06/630,872.19 = 121,000.12/x - Step 3: Cross multiply
420,517.06x = 630,872.19 × 121,000.12 - Step 4: Simplify right side
420,517.06x = 76,335,609,117.48 - Step 5: Solve for x
x = 76,335,609,117.48/420,517.06 - Step 6: Final answer
x = 181,527.97
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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.