Finding the Fourth Proportional to 339,157.80, 508,808.66 and 128,791.08
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Solution
The fourth proportional to 339,157.80, 508,808.66 and 128,791.08 is: 193,213.95
Step by Step Solution
- Step 1: Write the proportion equation
339,157.80 : 508,808.66 = 128,791.08 : x - Step 2: Convert to fraction form
339,157.80/508,808.66 = 128,791.08/x - Step 3: Cross multiply
339,157.80x = 508,808.66 × 128,791.08 - Step 4: Simplify right side
339,157.80x = 65,530,016,834.75 - Step 5: Solve for x
x = 65,530,016,834.75/339,157.80 - Step 6: Final answer
x = 193,213.95
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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.