Finding the Fourth Proportional to 305,890.08, 422,281.80 and 191,232.42
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Solution
The fourth proportional to 305,890.08, 422,281.80 and 191,232.42 is: 263,996.70
Step by Step Solution
- Step 1: Write the proportion equation
305,890.08 : 422,281.80 = 191,232.42 : x - Step 2: Convert to fraction form
305,890.08/422,281.80 = 191,232.42/x - Step 3: Cross multiply
305,890.08x = 422,281.80 × 191,232.42 - Step 4: Simplify right side
305,890.08x = 80,753,970,535.96 - Step 5: Solve for x
x = 80,753,970,535.96/305,890.08 - Step 6: Final answer
x = 263,996.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.