Finding the Fourth Proportional to 289,493.70, 433,981.35 and 189,701.70
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Solution
The fourth proportional to 289,493.70, 433,981.35 and 189,701.70 is: 284,382.70
Step by Step Solution
- Step 1: Write the proportion equation
289,493.70 : 433,981.35 = 189,701.70 : x - Step 2: Convert to fraction form
289,493.70/433,981.35 = 189,701.70/x - Step 3: Cross multiply
289,493.70x = 433,981.35 × 189,701.70 - Step 4: Simplify right side
289,493.70x = 82,326,999,863.30 - Step 5: Solve for x
x = 82,326,999,863.30/289,493.70 - Step 6: Final answer
x = 284,382.70
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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.