Finding the Fourth Proportional to 221,008.70, 331,515.30 and 121,114.46
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Solution
The fourth proportional to 221,008.70, 331,515.30 and 121,114.46 is: 181,672.92
Step by Step Solution
- Step 1: Write the proportion equation
221,008.70 : 331,515.30 = 121,114.46 : x - Step 2: Convert to fraction form
221,008.70/331,515.30 = 121,114.46/x - Step 3: Cross multiply
221,008.70x = 331,515.30 × 121,114.46 - Step 4: Simplify right side
221,008.70x = 40,151,296,541.24 - Step 5: Solve for x
x = 40,151,296,541.24/221,008.70 - Step 6: Final answer
x = 181,672.92
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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.