Finding the Fourth Proportional to 393,918.60, 590,950.80 and 127,687.80
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Solution
The fourth proportional to 393,918.60, 590,950.80 and 127,687.80 is: 191,555.33
Step by Step Solution
- Step 1: Write the proportion equation
393,918.60 : 590,950.80 = 127,687.80 : x - Step 2: Convert to fraction form
393,918.60/590,950.80 = 127,687.80/x - Step 3: Cross multiply
393,918.60x = 590,950.80 × 127,687.80 - Step 4: Simplify right side
393,918.60x = 75,457,207,560.24 - Step 5: Solve for x
x = 75,457,207,560.24/393,918.60 - Step 6: Final answer
x = 191,555.33
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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.