Finding the Fourth Proportional to 219,969.12, 329,205.68 and 135,782.40
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Solution
The fourth proportional to 219,969.12, 329,205.68 and 135,782.40 is: 203,211.88
Step by Step Solution
- Step 1: Write the proportion equation
219,969.12 : 329,205.68 = 135,782.40 : x - Step 2: Convert to fraction form
219,969.12/329,205.68 = 135,782.40/x - Step 3: Cross multiply
219,969.12x = 329,205.68 × 135,782.40 - Step 4: Simplify right side
219,969.12x = 44,700,337,324.03 - Step 5: Solve for x
x = 44,700,337,324.03/219,969.12 - Step 6: Final answer
x = 203,211.88
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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.