Finding the Fourth Proportional to 212,445.99, 318,865.82 and 107,338.77
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Solution
The fourth proportional to 212,445.99, 318,865.82 and 107,338.77 is: 161,107.60
Step by Step Solution
- Step 1: Write the proportion equation
212,445.99 : 318,865.82 = 107,338.77 : x - Step 2: Convert to fraction form
212,445.99/318,865.82 = 107,338.77/x - Step 3: Cross multiply
212,445.99x = 318,865.82 × 107,338.77 - Step 4: Simplify right side
212,445.99x = 34,226,664,377.15 - Step 5: Solve for x
x = 34,226,664,377.15/212,445.99 - Step 6: Final answer
x = 161,107.60
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1.5x scale
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.