Finding the Fourth Proportional to 397,990.23, 549,236.97 and 216,709.80
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Solution
The fourth proportional to 397,990.23, 549,236.97 and 216,709.80 is: 299,065.22
Step by Step Solution
- Step 1: Write the proportion equation
397,990.23 : 549,236.97 = 216,709.80 : x - Step 2: Convert to fraction form
397,990.23/549,236.97 = 216,709.80/x - Step 3: Cross multiply
397,990.23x = 549,236.97 × 216,709.80 - Step 4: Simplify right side
397,990.23x = 119,025,033,921.31 - Step 5: Solve for x
x = 119,025,033,921.31/397,990.23 - Step 6: Final answer
x = 299,065.22
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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.