Finding the Fourth Proportional to 313,007.70, 469,511.55 and 91,391.70
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Solution
The fourth proportional to 313,007.70, 469,511.55 and 91,391.70 is: 137,087.55
Step by Step Solution
- Step 1: Write the proportion equation
313,007.70 : 469,511.55 = 91,391.70 : x - Step 2: Convert to fraction form
313,007.70/469,511.55 = 91,391.70/x - Step 3: Cross multiply
313,007.70x = 469,511.55 × 91,391.70 - Step 4: Simplify right side
313,007.70x = 42,909,458,724.14 - Step 5: Solve for x
x = 42,909,458,724.14/313,007.70 - Step 6: Final answer
x = 137,087.55
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1.5x scale
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.