Finding the Fourth Proportional to 311,689.08, 430,099.88 and 190,864.62
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Solution
The fourth proportional to 311,689.08, 430,099.88 and 190,864.62 is: 263,374.16
Step by Step Solution
- Step 1: Write the proportion equation
311,689.08 : 430,099.88 = 190,864.62 : x - Step 2: Convert to fraction form
311,689.08/430,099.88 = 190,864.62/x - Step 3: Cross multiply
311,689.08x = 430,099.88 × 190,864.62 - Step 4: Simplify right side
311,689.08x = 82,090,849,203.92 - Step 5: Solve for x
x = 82,090,849,203.92/311,689.08 - Step 6: Final answer
x = 263,374.16
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1.5x scale
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.