Finding the Fourth Proportional to 198,288.12, 273,638.34 and 107,644.26
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Solution
The fourth proportional to 198,288.12, 273,638.34 and 107,644.26 is: 148,549.48
Step by Step Solution
- Step 1: Write the proportion equation
198,288.12 : 273,638.34 = 107,644.26 : x - Step 2: Convert to fraction form
198,288.12/273,638.34 = 107,644.26/x - Step 3: Cross multiply
198,288.12x = 273,638.34 × 107,644.26 - Step 4: Simplify right side
198,288.12x = 29,455,596,616.93 - Step 5: Solve for x
x = 29,455,596,616.93/198,288.12 - Step 6: Final answer
x = 148,549.48
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1.5x scale
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.