Finding the Fourth Proportional to 518,405.75, 777,653.18 and 144,428.75
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Solution
The fourth proportional to 518,405.75, 777,653.18 and 144,428.75 is: 216,655.54
Step by Step Solution
- Step 1: Write the proportion equation
518,405.75 : 777,653.18 = 144,428.75 : x - Step 2: Convert to fraction form
518,405.75/777,653.18 = 144,428.75/x - Step 3: Cross multiply
518,405.75x = 777,653.18 × 144,428.75 - Step 4: Simplify right side
518,405.75x = 112,315,476,720.93 - Step 5: Solve for x
x = 112,315,476,720.93/518,405.75 - Step 6: Final answer
x = 216,655.54
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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.