Finding the Fourth Proportional to 261,563.13, 392,348.34 and 74,574.63
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Solution
The fourth proportional to 261,563.13, 392,348.34 and 74,574.63 is: 111,862.98
Step by Step Solution
- Step 1: Write the proportion equation
261,563.13 : 392,348.34 = 74,574.63 : x - Step 2: Convert to fraction form
261,563.13/392,348.34 = 74,574.63/x - Step 3: Cross multiply
261,563.13x = 392,348.34 × 74,574.63 - Step 4: Simplify right side
261,563.13x = 29,259,232,286.61 - Step 5: Solve for x
x = 29,259,232,286.61/261,563.13 - Step 6: Final answer
x = 111,862.98
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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.