Finding the Fourth Proportional to 311,811.24, 430,298.16 and 168,571.20
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Solution
The fourth proportional to 311,811.24, 430,298.16 and 168,571.20 is: 232,627.53
Step by Step Solution
- Step 1: Write the proportion equation
311,811.24 : 430,298.16 = 168,571.20 : x - Step 2: Convert to fraction form
311,811.24/430,298.16 = 168,571.20/x - Step 3: Cross multiply
311,811.24x = 430,298.16 × 168,571.20 - Step 4: Simplify right side
311,811.24x = 72,535,877,188.99 - Step 5: Solve for x
x = 72,535,877,188.99/311,811.24 - Step 6: Final answer
x = 232,627.53
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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.