Finding the Fourth Proportional to 331,704.40, 497,621.40 and 131,990.80
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Solution
The fourth proportional to 331,704.40, 497,621.40 and 131,990.80 is: 198,011.99
Step by Step Solution
- Step 1: Write the proportion equation
331,704.40 : 497,621.40 = 131,990.80 : x - Step 2: Convert to fraction form
331,704.40/497,621.40 = 131,990.80/x - Step 3: Cross multiply
331,704.40x = 497,621.40 × 131,990.80 - Step 4: Simplify right side
331,704.40x = 65,681,446,683.12 - Step 5: Solve for x
x = 65,681,446,683.12/331,704.40 - Step 6: Final answer
x = 198,011.99
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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.