Finding the Fourth Proportional to 398,287.44, 549,631.62 and 217,006.92
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Solution
The fourth proportional to 398,287.44, 549,631.62 and 217,006.92 is: 299,466.80
Step by Step Solution
- Step 1: Write the proportion equation
398,287.44 : 549,631.62 = 217,006.92 : x - Step 2: Convert to fraction form
398,287.44/549,631.62 = 217,006.92/x - Step 3: Cross multiply
398,287.44x = 549,631.62 × 217,006.92 - Step 4: Simplify right side
398,287.44x = 119,273,864,990.81 - Step 5: Solve for x
x = 119,273,864,990.81/398,287.44 - Step 6: Final answer
x = 299,466.80
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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.