Finding the Fourth Proportional to 212,455.04, 318,690.18 and 72,195.44
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Solution
The fourth proportional to 212,455.04, 318,690.18 and 72,195.44 is: 108,295.75
Step by Step Solution
- Step 1: Write the proportion equation
212,455.04 : 318,690.18 = 72,195.44 : x - Step 2: Convert to fraction form
212,455.04/318,690.18 = 72,195.44/x - Step 3: Cross multiply
212,455.04x = 318,690.18 × 72,195.44 - Step 4: Simplify right side
212,455.04x = 23,007,977,768.78 - Step 5: Solve for x
x = 23,007,977,768.78/212,455.04 - Step 6: Final answer
x = 108,295.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.