Finding the Fourth Proportional to 416,719.47, 625,138.79 and 128,555.49
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Solution
The fourth proportional to 416,719.47, 625,138.79 and 128,555.49 is: 192,851.62
Step by Step Solution
- Step 1: Write the proportion equation
416,719.47 : 625,138.79 = 128,555.49 : x - Step 2: Convert to fraction form
416,719.47/625,138.79 = 128,555.49/x - Step 3: Cross multiply
416,719.47x = 625,138.79 × 128,555.49 - Step 4: Simplify right side
416,719.47x = 80,365,022,823.68 - Step 5: Solve for x
x = 80,365,022,823.68/416,719.47 - Step 6: Final answer
x = 192,851.62
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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.