Finding the Fourth Proportional to 298,424.09, 412,195.21 and 216,621.88
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Solution
The fourth proportional to 298,424.09, 412,195.21 and 216,621.88 is: 299,206.74
Step by Step Solution
- Step 1: Write the proportion equation
298,424.09 : 412,195.21 = 216,621.88 : x - Step 2: Convert to fraction form
298,424.09/412,195.21 = 216,621.88/x - Step 3: Cross multiply
298,424.09x = 412,195.21 × 216,621.88 - Step 4: Simplify right side
298,424.09x = 89,290,499,745.15 - Step 5: Solve for x
x = 89,290,499,745.15/298,424.09 - Step 6: Final answer
x = 299,206.74
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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.