Finding the Fourth Proportional to 208,236.08, 312,482.64 and 81,854.21
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Solution
The fourth proportional to 208,236.08, 312,482.64 and 81,854.21 is: 122,831.83
Step by Step Solution
- Step 1: Write the proportion equation
208,236.08 : 312,482.64 = 81,854.21 : x - Step 2: Convert to fraction form
208,236.08/312,482.64 = 81,854.21/x - Step 3: Cross multiply
208,236.08x = 312,482.64 × 81,854.21 - Step 4: Simplify right side
208,236.08x = 25,578,019,635.91 - Step 5: Solve for x
x = 25,578,019,635.91/208,236.08 - Step 6: Final answer
x = 122,831.83
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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.