Finding the Fourth Proportional to 315,917.64, 436,258.98 and 202,938.84
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Solution
The fourth proportional to 315,917.64, 436,258.98 and 202,938.84 is: 280,243.58
Step by Step Solution
- Step 1: Write the proportion equation
315,917.64 : 436,258.98 = 202,938.84 : x - Step 2: Convert to fraction form
315,917.64/436,258.98 = 202,938.84/x - Step 3: Cross multiply
315,917.64x = 436,258.98 × 202,938.84 - Step 4: Simplify right side
315,917.64x = 88,533,891,340.78 - Step 5: Solve for x
x = 88,533,891,340.78/315,917.64 - Step 6: Final answer
x = 280,243.58
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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.