Finding the Fourth Proportional to 207,628.80, 311,788.80 and 114,201.60
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Solution
The fourth proportional to 207,628.80, 311,788.80 and 114,201.60 is: 171,492.49
Step by Step Solution
- Step 1: Write the proportion equation
207,628.80 : 311,788.80 = 114,201.60 : x - Step 2: Convert to fraction form
207,628.80/311,788.80 = 114,201.60/x - Step 3: Cross multiply
207,628.80x = 311,788.80 × 114,201.60 - Step 4: Simplify right side
207,628.80x = 35,606,779,822.08 - Step 5: Solve for x
x = 35,606,779,822.08/207,628.80 - Step 6: Final answer
x = 171,492.49
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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.