Finding the Fourth Proportional to 307,575.20, 461,224.38 and 129,990.80
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Solution
The fourth proportional to 307,575.20, 461,224.38 and 129,990.80 is: 194,927.70
Step by Step Solution
- Step 1: Write the proportion equation
307,575.20 : 461,224.38 = 129,990.80 : x - Step 2: Convert to fraction form
307,575.20/461,224.38 = 129,990.80/x - Step 3: Cross multiply
307,575.20x = 461,224.38 × 129,990.80 - Step 4: Simplify right side
307,575.20x = 59,954,926,135.70 - Step 5: Solve for x
x = 59,954,926,135.70/307,575.20 - Step 6: Final answer
x = 194,927.70
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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.