Finding the Fourth Proportional to 288,693.99, 398,390.74 and 159,629.13
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Solution
The fourth proportional to 288,693.99, 398,390.74 and 159,629.13 is: 220,284.35
Step by Step Solution
- Step 1: Write the proportion equation
288,693.99 : 398,390.74 = 159,629.13 : x - Step 2: Convert to fraction form
288,693.99/398,390.74 = 159,629.13/x - Step 3: Cross multiply
288,693.99x = 398,390.74 × 159,629.13 - Step 4: Simplify right side
288,693.99x = 63,594,766,827.18 - Step 5: Solve for x
x = 63,594,766,827.18/288,693.99 - Step 6: Final answer
x = 220,284.35
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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.