Finding the Fourth Proportional to 392,993.19, 589,604.60 and 126,747.81
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Solution
The fourth proportional to 392,993.19, 589,604.60 and 126,747.81 is: 190,158.75
Step by Step Solution
- Step 1: Write the proportion equation
392,993.19 : 589,604.60 = 126,747.81 : x - Step 2: Convert to fraction form
392,993.19/589,604.60 = 126,747.81/x - Step 3: Cross multiply
392,993.19x = 589,604.60 × 126,747.81 - Step 4: Simplify right side
392,993.19x = 74,731,092,132.80 - Step 5: Solve for x
x = 74,731,092,132.80/392,993.19 - Step 6: Final answer
x = 190,158.75
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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.