Finding the Fourth Proportional to 402,128.40, 603,532.80 and 165,640.80
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Solution
The fourth proportional to 402,128.40, 603,532.80 and 165,640.80 is: 248,601.33
Step by Step Solution
- Step 1: Write the proportion equation
402,128.40 : 603,532.80 = 165,640.80 : x - Step 2: Convert to fraction form
402,128.40/603,532.80 = 165,640.80/x - Step 3: Cross multiply
402,128.40x = 603,532.80 × 165,640.80 - Step 4: Simplify right side
402,128.40x = 99,969,655,818.24 - Step 5: Solve for x
x = 99,969,655,818.24/402,128.40 - Step 6: Final answer
x = 248,601.33
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1.5x scale
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.