Finding the Fourth Proportional to 397,843.18, 549,070.42 and 223,442.08
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Solution
The fourth proportional to 397,843.18, 549,070.42 and 223,442.08 is: 308,376.37
Step by Step Solution
- Step 1: Write the proportion equation
397,843.18 : 549,070.42 = 223,442.08 : x - Step 2: Convert to fraction form
397,843.18/549,070.42 = 223,442.08/x - Step 3: Cross multiply
397,843.18x = 549,070.42 × 223,442.08 - Step 4: Simplify right side
397,843.18x = 122,685,436,711.27 - Step 5: Solve for x
x = 122,685,436,711.27/397,843.18 - Step 6: Final answer
x = 308,376.37
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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.