Finding the Fourth Proportional to 388,453.76, 536,117.28 and 218,720.96
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Solution
The fourth proportional to 388,453.76, 536,117.28 and 218,720.96 is: 301,863.69
Step by Step Solution
- Step 1: Write the proportion equation
388,453.76 : 536,117.28 = 218,720.96 : x - Step 2: Convert to fraction form
388,453.76/536,117.28 = 218,720.96/x - Step 3: Cross multiply
388,453.76x = 536,117.28 × 218,720.96 - Step 4: Simplify right side
388,453.76x = 117,260,086,154.19 - Step 5: Solve for x
x = 117,260,086,154.19/388,453.76 - Step 6: Final answer
x = 301,863.69
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.