Finding the Fourth Proportional to 225,842.88, 311,650.68 and 129,043.08
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Solution
The fourth proportional to 225,842.88, 311,650.68 and 129,043.08 is: 178,072.31
Step by Step Solution
- Step 1: Write the proportion equation
225,842.88 : 311,650.68 = 129,043.08 : x - Step 2: Convert to fraction form
225,842.88/311,650.68 = 129,043.08/x - Step 3: Cross multiply
225,842.88x = 311,650.68 × 129,043.08 - Step 4: Simplify right side
225,842.88x = 40,216,363,631.29 - Step 5: Solve for x
x = 40,216,363,631.29/225,842.88 - Step 6: Final answer
x = 178,072.31
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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.