Finding the Fourth Proportional to 438,512.64, 605,145.60 and 247,523.84
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Solution
The fourth proportional to 438,512.64, 605,145.60 and 247,523.84 is: 341,581.86
Step by Step Solution
- Step 1: Write the proportion equation
438,512.64 : 605,145.60 = 247,523.84 : x - Step 2: Convert to fraction form
438,512.64/605,145.60 = 247,523.84/x - Step 3: Cross multiply
438,512.64x = 605,145.60 × 247,523.84 - Step 4: Simplify right side
438,512.64x = 149,787,962,671.10 - Step 5: Solve for x
x = 149,787,962,671.10/438,512.64 - Step 6: Final answer
x = 341,581.86
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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.