Finding the Fourth Proportional to 395,258.10, 545,455.57 and 213,969.99
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Solution
The fourth proportional to 395,258.10, 545,455.57 and 213,969.99 is: 295,278.25
Step by Step Solution
- Step 1: Write the proportion equation
395,258.10 : 545,455.57 = 213,969.99 : x - Step 2: Convert to fraction form
395,258.10/545,455.57 = 213,969.99/x - Step 3: Cross multiply
395,258.10x = 545,455.57 × 213,969.99 - Step 4: Simplify right side
395,258.10x = 116,711,120,551.32 - Step 5: Solve for x
x = 116,711,120,551.32/395,258.10 - Step 6: Final answer
x = 295,278.25
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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.