Finding the Fourth Proportional to 290,663.52, 435,946.08 and 80,302.08
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Solution
The fourth proportional to 290,663.52, 435,946.08 and 80,302.08 is: 120,439.53
Step by Step Solution
- Step 1: Write the proportion equation
290,663.52 : 435,946.08 = 80,302.08 : x - Step 2: Convert to fraction form
290,663.52/435,946.08 = 80,302.08/x - Step 3: Cross multiply
290,663.52x = 435,946.08 × 80,302.08 - Step 4: Simplify right side
290,663.52x = 35,007,376,991.85 - Step 5: Solve for x
x = 35,007,376,991.85/290,663.52 - Step 6: Final answer
x = 120,439.53
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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.