Finding the Fourth Proportional to 318,609.97, 477,916.30 and 129,074.02
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Solution
The fourth proportional to 318,609.97, 477,916.30 and 129,074.02 is: 193,611.57
Step by Step Solution
- Step 1: Write the proportion equation
318,609.97 : 477,916.30 = 129,074.02 : x - Step 2: Convert to fraction form
318,609.97/477,916.30 = 129,074.02/x - Step 3: Cross multiply
318,609.97x = 477,916.30 × 129,074.02 - Step 4: Simplify right side
318,609.97x = 61,686,578,064.53 - Step 5: Solve for x
x = 61,686,578,064.53/318,609.97 - Step 6: Final answer
x = 193,611.57
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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.