Finding the Fourth Proportional to 429,409.80, 644,114.70 and 193,213.80
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Solution
The fourth proportional to 429,409.80, 644,114.70 and 193,213.80 is: 289,820.70
Step by Step Solution
- Step 1: Write the proportion equation
429,409.80 : 644,114.70 = 193,213.80 : x - Step 2: Convert to fraction form
429,409.80/644,114.70 = 193,213.80/x - Step 3: Cross multiply
429,409.80x = 644,114.70 × 193,213.80 - Step 4: Simplify right side
429,409.80x = 124,451,848,822.86 - Step 5: Solve for x
x = 124,451,848,822.86/429,409.80 - Step 6: Final answer
x = 289,820.70
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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.