Finding the Fourth Proportional to 398,473.36, 549,893.44 and 226,391.62
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Solution
The fourth proportional to 398,473.36, 549,893.44 and 226,391.62 is: 312,420.55
Step by Step Solution
- Step 1: Write the proportion equation
398,473.36 : 549,893.44 = 226,391.62 : x - Step 2: Convert to fraction form
398,473.36/549,893.44 = 226,391.62/x - Step 3: Cross multiply
398,473.36x = 549,893.44 × 226,391.62 - Step 4: Simplify right side
398,473.36x = 124,491,266,708.97 - Step 5: Solve for x
x = 124,491,266,708.97/398,473.36 - Step 6: Final answer
x = 312,420.55
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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.