Finding the Fourth Proportional to 212,718.30, 319,336.65 and 211,163.10
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Solution
The fourth proportional to 212,718.30, 319,336.65 and 211,163.10 is: 317,001.95
Step by Step Solution
- Step 1: Write the proportion equation
212,718.30 : 319,336.65 = 211,163.10 : x - Step 2: Convert to fraction form
212,718.30/319,336.65 = 211,163.10/x - Step 3: Cross multiply
212,718.30x = 319,336.65 × 211,163.10 - Step 4: Simplify right side
212,718.30x = 67,432,116,957.62 - Step 5: Solve for x
x = 67,432,116,957.62/212,718.30 - Step 6: Final answer
x = 317,001.95
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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.