Finding the Fourth Proportional to 311,426.73, 467,140.41 and 86,787.81
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Solution
The fourth proportional to 311,426.73, 467,140.41 and 86,787.81 is: 130,181.80
Step by Step Solution
- Step 1: Write the proportion equation
311,426.73 : 467,140.41 = 86,787.81 : x - Step 2: Convert to fraction form
311,426.73/467,140.41 = 86,787.81/x - Step 3: Cross multiply
311,426.73x = 467,140.41 × 86,787.81 - Step 4: Simplify right side
311,426.73x = 40,542,093,146.40 - Step 5: Solve for x
x = 40,542,093,146.40/311,426.73 - Step 6: Final answer
x = 130,181.80
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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.