Finding the Fourth Proportional to 312,157.49, 430,671.90 and 203,212.09
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Solution
The fourth proportional to 312,157.49, 430,671.90 and 203,212.09 is: 280,364.05
Step by Step Solution
- Step 1: Write the proportion equation
312,157.49 : 430,671.90 = 203,212.09 : x - Step 2: Convert to fraction form
312,157.49/430,671.90 = 203,212.09/x - Step 3: Cross multiply
312,157.49x = 430,671.90 × 203,212.09 - Step 4: Simplify right side
312,157.49x = 87,517,736,903.27 - Step 5: Solve for x
x = 87,517,736,903.27/312,157.49 - Step 6: Final answer
x = 280,364.05
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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.