Finding the Fourth Proportional to 386,361.96, 579,641.35 and 120,124.68
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Solution
The fourth proportional to 386,361.96, 579,641.35 and 120,124.68 is: 180,217.62
Step by Step Solution
- Step 1: Write the proportion equation
386,361.96 : 579,641.35 = 120,124.68 : x - Step 2: Convert to fraction form
386,361.96/579,641.35 = 120,124.68/x - Step 3: Cross multiply
386,361.96x = 579,641.35 × 120,124.68 - Step 4: Simplify right side
386,361.96x = 69,629,231,683.52 - Step 5: Solve for x
x = 69,629,231,683.52/386,361.96 - Step 6: Final answer
x = 180,217.62
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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.