Finding the Fourth Proportional to 328,523.80, 492,785.70 and 79,205.80
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Solution
The fourth proportional to 328,523.80, 492,785.70 and 79,205.80 is: 118,808.70
Step by Step Solution
- Step 1: Write the proportion equation
328,523.80 : 492,785.70 = 79,205.80 : x - Step 2: Convert to fraction form
328,523.80/492,785.70 = 79,205.80/x - Step 3: Cross multiply
328,523.80x = 492,785.70 × 79,205.80 - Step 4: Simplify right side
328,523.80x = 39,031,485,597.06 - Step 5: Solve for x
x = 39,031,485,597.06/328,523.80 - Step 6: Final answer
x = 118,808.70
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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.