Finding the Fourth Proportional to 242,859.05, 335,146.95 and 135,435.87
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Solution
The fourth proportional to 242,859.05, 335,146.95 and 135,435.87 is: 186,902.32
Step by Step Solution
- Step 1: Write the proportion equation
242,859.05 : 335,146.95 = 135,435.87 : x - Step 2: Convert to fraction form
242,859.05/335,146.95 = 135,435.87/x - Step 3: Cross multiply
242,859.05x = 335,146.95 × 135,435.87 - Step 4: Simplify right side
242,859.05x = 45,390,918,751.10 - Step 5: Solve for x
x = 45,390,918,751.10/242,859.05 - Step 6: Final answer
x = 186,902.32
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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.