Finding the Fourth Proportional to 197,381.32, 272,412.18 and 112,478.92
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Solution
The fourth proportional to 197,381.32, 272,412.18 and 112,478.92 is: 155,235.70
Step by Step Solution
- Step 1: Write the proportion equation
197,381.32 : 272,412.18 = 112,478.92 : x - Step 2: Convert to fraction form
197,381.32/272,412.18 = 112,478.92/x - Step 3: Cross multiply
197,381.32x = 272,412.18 × 112,478.92 - Step 4: Simplify right side
197,381.32x = 30,640,627,801.25 - Step 5: Solve for x
x = 30,640,627,801.25/197,381.32 - Step 6: Final answer
x = 155,235.70
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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.