Finding the Fourth Proportional to 311,539.87, 467,320.34 and 86,905.81
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Solution
The fourth proportional to 311,539.87, 467,320.34 and 86,905.81 is: 130,361.65
Step by Step Solution
- Step 1: Write the proportion equation
311,539.87 : 467,320.34 = 86,905.81 : x - Step 2: Convert to fraction form
311,539.87/467,320.34 = 86,905.81/x - Step 3: Cross multiply
311,539.87x = 467,320.34 × 86,905.81 - Step 4: Simplify right side
311,539.87x = 40,612,852,242.65 - Step 5: Solve for x
x = 40,612,852,242.65/311,539.87 - Step 6: Final answer
x = 130,361.65
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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.