Finding the Fourth Proportional to 274,415.20, 411,622.80 and 96,920.80
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Solution
The fourth proportional to 274,415.20, 411,622.80 and 96,920.80 is: 145,381.20
Step by Step Solution
- Step 1: Write the proportion equation
274,415.20 : 411,622.80 = 96,920.80 : x - Step 2: Convert to fraction form
274,415.20/411,622.80 = 96,920.80/x - Step 3: Cross multiply
274,415.20x = 411,622.80 × 96,920.80 - Step 4: Simplify right side
274,415.20x = 39,894,811,074.24 - Step 5: Solve for x
x = 39,894,811,074.24/274,415.20 - Step 6: Final answer
x = 145,381.20
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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.