Finding the Fourth Proportional to 386,217.17, 579,485.63 and 208,515.19
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Solution
The fourth proportional to 386,217.17, 579,485.63 and 208,515.19 is: 312,859.09
Step by Step Solution
- Step 1: Write the proportion equation
386,217.17 : 579,485.63 = 208,515.19 : x - Step 2: Convert to fraction form
386,217.17/579,485.63 = 208,515.19/x - Step 3: Cross multiply
386,217.17x = 579,485.63 × 208,515.19 - Step 4: Simplify right side
386,217.17x = 120,831,552,301.72 - Step 5: Solve for x
x = 120,831,552,301.72/386,217.17 - Step 6: Final answer
x = 312,859.09
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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.