Finding the Fourth Proportional to 392,941.28, 542,305.06 and 220,859.48
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Solution
The fourth proportional to 392,941.28, 542,305.06 and 220,859.48 is: 304,811.99
Step by Step Solution
- Step 1: Write the proportion equation
392,941.28 : 542,305.06 = 220,859.48 : x - Step 2: Convert to fraction form
392,941.28/542,305.06 = 220,859.48/x - Step 3: Cross multiply
392,941.28x = 542,305.06 × 220,859.48 - Step 4: Simplify right side
392,941.28x = 119,773,213,552.97 - Step 5: Solve for x
x = 119,773,213,552.97/392,941.28 - Step 6: Final answer
x = 304,811.99
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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.