Finding the Fourth Proportional to 379,731.60, 569,683.80 and 221,878.80
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Solution
The fourth proportional to 379,731.60, 569,683.80 and 221,878.80 is: 332,868.68
Step by Step Solution
- Step 1: Write the proportion equation
379,731.60 : 569,683.80 = 221,878.80 : x - Step 2: Convert to fraction form
379,731.60/569,683.80 = 221,878.80/x - Step 3: Cross multiply
379,731.60x = 569,683.80 × 221,878.80 - Step 4: Simplify right side
379,731.60x = 126,400,757,923.44 - Step 5: Solve for x
x = 126,400,757,923.44/379,731.60 - Step 6: Final answer
x = 332,868.68
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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.