Finding the Fourth Proportional to 312,156.49, 430,670.52 and 203,211.09
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Solution
The fourth proportional to 312,156.49, 430,670.52 and 203,211.09 is: 280,362.67
Step by Step Solution
- Step 1: Write the proportion equation
312,156.49 : 430,670.52 = 203,211.09 : x - Step 2: Convert to fraction form
312,156.49/430,670.52 = 203,211.09/x - Step 3: Cross multiply
312,156.49x = 430,670.52 × 203,211.09 - Step 4: Simplify right side
312,156.49x = 87,517,025,800.07 - Step 5: Solve for x
x = 87,517,025,800.07/312,156.49 - Step 6: Final answer
x = 280,362.67
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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.