Finding the Fourth Proportional to 398,178.75, 549,486.69 and 219,330.75
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Solution
The fourth proportional to 398,178.75, 549,486.69 and 219,330.75 is: 302,676.44
Step by Step Solution
- Step 1: Write the proportion equation
398,178.75 : 549,486.69 = 219,330.75 : x - Step 2: Convert to fraction form
398,178.75/549,486.69 = 219,330.75/x - Step 3: Cross multiply
398,178.75x = 549,486.69 × 219,330.75 - Step 4: Simplify right side
398,178.75x = 120,519,327,832.72 - Step 5: Solve for x
x = 120,519,327,832.72/398,178.75 - Step 6: Final answer
x = 302,676.44
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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.