Finding the Fourth Proportional to 355,905.71, 491,149.93 and 194,760.80
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Solution
The fourth proportional to 355,905.71, 491,149.93 and 194,760.80 is: 268,769.92
Step by Step Solution
- Step 1: Write the proportion equation
355,905.71 : 491,149.93 = 194,760.80 : x - Step 2: Convert to fraction form
355,905.71/491,149.93 = 194,760.80/x - Step 3: Cross multiply
355,905.71x = 491,149.93 × 194,760.80 - Step 4: Simplify right side
355,905.71x = 95,656,750,830.99 - Step 5: Solve for x
x = 95,656,750,830.99/355,905.71 - Step 6: Final answer
x = 268,769.92
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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.