Finding the Fourth Proportional to 207,388.69, 286,284.86 and 139,445.05
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Solution
The fourth proportional to 207,388.69, 286,284.86 and 139,445.05 is: 192,493.65
Step by Step Solution
- Step 1: Write the proportion equation
207,388.69 : 286,284.86 = 139,445.05 : x - Step 2: Convert to fraction form
207,388.69/286,284.86 = 139,445.05/x - Step 3: Cross multiply
207,388.69x = 286,284.86 × 139,445.05 - Step 4: Simplify right side
207,388.69x = 39,921,006,057.22 - Step 5: Solve for x
x = 39,921,006,057.22/207,388.69 - Step 6: Final answer
x = 192,493.65
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1.5x scale
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.