Finding the Fourth Proportional to 338,657.20, 508,201.80 and 161,364.40
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Solution
The fourth proportional to 338,657.20, 508,201.80 and 161,364.40 is: 242,149.52
Step by Step Solution
- Step 1: Write the proportion equation
338,657.20 : 508,201.80 = 161,364.40 : x - Step 2: Convert to fraction form
338,657.20/508,201.80 = 161,364.40/x - Step 3: Cross multiply
338,657.20x = 508,201.80 × 161,364.40 - Step 4: Simplify right side
338,657.20x = 82,005,678,535.92 - Step 5: Solve for x
x = 82,005,678,535.92/338,657.20 - Step 6: Final answer
x = 242,149.52
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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.