Finding the Fourth Proportional to 386,445.53, 579,766.41 and 120,208.05
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Solution
The fourth proportional to 386,445.53, 579,766.41 and 120,208.05 is: 180,342.59
Step by Step Solution
- Step 1: Write the proportion equation
386,445.53 : 579,766.41 = 120,208.05 : x - Step 2: Convert to fraction form
386,445.53/579,766.41 = 120,208.05/x - Step 3: Cross multiply
386,445.53x = 579,766.41 × 120,208.05 - Step 4: Simplify right side
386,445.53x = 69,692,589,601.60 - Step 5: Solve for x
x = 69,692,589,601.60/386,445.53 - Step 6: Final answer
x = 180,342.59
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.