Finding the Fourth Proportional to 393,756.13, 590,721.67 and 144,438.13
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Solution
The fourth proportional to 393,756.13, 590,721.67 and 144,438.13 is: 216,689.28
Step by Step Solution
- Step 1: Write the proportion equation
393,756.13 : 590,721.67 = 144,438.13 : x - Step 2: Convert to fraction form
393,756.13/590,721.67 = 144,438.13/x - Step 3: Cross multiply
393,756.13x = 590,721.67 × 144,438.13 - Step 4: Simplify right side
393,756.13x = 85,322,733,365.28 - Step 5: Solve for x
x = 85,322,733,365.28/393,756.13 - Step 6: Final answer
x = 216,689.28
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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.