Finding the Fourth Proportional to 203,219.40, 304,501.05 and 128,205.30
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Solution
The fourth proportional to 203,219.40, 304,501.05 and 128,205.30 is: 192,100.99
Step by Step Solution
- Step 1: Write the proportion equation
203,219.40 : 304,501.05 = 128,205.30 : x - Step 2: Convert to fraction form
203,219.40/304,501.05 = 128,205.30/x - Step 3: Cross multiply
203,219.40x = 304,501.05 × 128,205.30 - Step 4: Simplify right side
203,219.40x = 39,038,648,465.57 - Step 5: Solve for x
x = 39,038,648,465.57/203,219.40 - Step 6: Final answer
x = 192,100.99
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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.