Finding the Fourth Proportional to 371,455.20, 557,182.80 and 318,311.10
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Solution
The fourth proportional to 371,455.20, 557,182.80 and 318,311.10 is: 477,466.65
Step by Step Solution
- Step 1: Write the proportion equation
371,455.20 : 557,182.80 = 318,311.10 : x - Step 2: Convert to fraction form
371,455.20/557,182.80 = 318,311.10/x - Step 3: Cross multiply
371,455.20x = 557,182.80 × 318,311.10 - Step 4: Simplify right side
371,455.20x = 177,357,469,969.08 - Step 5: Solve for x
x = 177,357,469,969.08/371,455.20 - Step 6: Final answer
x = 477,466.65
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Similar ratio
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1.5x scale
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.