Finding the Fourth Proportional to 311,615.68, 429,934.04 and 190,630.84
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Solution
The fourth proportional to 311,615.68, 429,934.04 and 190,630.84 is: 263,012.07
Step by Step Solution
- Step 1: Write the proportion equation
311,615.68 : 429,934.04 = 190,630.84 : x - Step 2: Convert to fraction form
311,615.68/429,934.04 = 190,630.84/x - Step 3: Cross multiply
311,615.68x = 429,934.04 × 190,630.84 - Step 4: Simplify right side
311,615.68x = 81,958,685,876.67 - Step 5: Solve for x
x = 81,958,685,876.67/311,615.68 - Step 6: Final answer
x = 263,012.07
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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.