Finding the Fourth Proportional to 389,969.17, 538,168.49 and 220,228.81
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Solution
The fourth proportional to 389,969.17, 538,168.49 and 220,228.81 is: 303,921.99
Step by Step Solution
- Step 1: Write the proportion equation
389,969.17 : 538,168.49 = 220,228.81 : x - Step 2: Convert to fraction form
389,969.17/538,168.49 = 220,228.81/x - Step 3: Cross multiply
389,969.17x = 538,168.49 × 220,228.81 - Step 4: Simplify right side
389,969.17x = 118,520,206,132.20 - Step 5: Solve for x
x = 118,520,206,132.20/389,969.17 - Step 6: Final answer
x = 303,921.99
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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.