Finding the Fourth Proportional to 421,816.20, 632,539.98 and 126,259.08
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Solution
The fourth proportional to 421,816.20, 632,539.98 and 126,259.08 is: 189,333.45
Step by Step Solution
- Step 1: Write the proportion equation
421,816.20 : 632,539.98 = 126,259.08 : x - Step 2: Convert to fraction form
421,816.20/632,539.98 = 126,259.08/x - Step 3: Cross multiply
421,816.20x = 632,539.98 × 126,259.08 - Step 4: Simplify right side
421,816.20x = 79,863,915,938.02 - Step 5: Solve for x
x = 79,863,915,938.02/421,816.20 - Step 6: Final answer
x = 189,333.45
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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.