Finding the Fourth Proportional to 311,961.92, 430,507.44 and 168,721.98
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Solution
The fourth proportional to 311,961.92, 430,507.44 and 168,721.98 is: 232,836.33
Step by Step Solution
- Step 1: Write the proportion equation
311,961.92 : 430,507.44 = 168,721.98 : x - Step 2: Convert to fraction form
311,961.92/430,507.44 = 168,721.98/x - Step 3: Cross multiply
311,961.92x = 430,507.44 × 168,721.98 - Step 4: Simplify right side
311,961.92x = 72,636,067,681.53 - Step 5: Solve for x
x = 72,636,067,681.53/311,961.92 - Step 6: Final answer
x = 232,836.33
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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.