Finding the Fourth Proportional to 396,202.16, 594,244.56 and 129,990.80
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Solution
The fourth proportional to 396,202.16, 594,244.56 and 129,990.80 is: 194,966.95
Step by Step Solution
- Step 1: Write the proportion equation
396,202.16 : 594,244.56 = 129,990.80 : x - Step 2: Convert to fraction form
396,202.16/594,244.56 = 129,990.80/x - Step 3: Cross multiply
396,202.16x = 594,244.56 × 129,990.80 - Step 4: Simplify right side
396,202.16x = 77,246,325,750.05 - Step 5: Solve for x
x = 77,246,325,750.05/396,202.16 - Step 6: Final answer
x = 194,966.95
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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.