Finding the Fourth Proportional to 200,408.01, 276,429.99 and 128,878.53
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Solution
The fourth proportional to 200,408.01, 276,429.99 and 128,878.53 is: 177,766.80
Step by Step Solution
- Step 1: Write the proportion equation
200,408.01 : 276,429.99 = 128,878.53 : x - Step 2: Convert to fraction form
200,408.01/276,429.99 = 128,878.53/x - Step 3: Cross multiply
200,408.01x = 276,429.99 × 128,878.53 - Step 4: Simplify right side
200,408.01x = 35,625,890,759.11 - Step 5: Solve for x
x = 35,625,890,759.11/200,408.01 - Step 6: Final answer
x = 177,766.80
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1.5x scale
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.