Finding the Fourth Proportional to 415,920.36, 573,705.84 and 272,689.68
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Solution
The fourth proportional to 415,920.36, 573,705.84 and 272,689.68 is: 376,138.50
Step by Step Solution
- Step 1: Write the proportion equation
415,920.36 : 573,705.84 = 272,689.68 : x - Step 2: Convert to fraction form
415,920.36/573,705.84 = 272,689.68/x - Step 3: Cross multiply
415,920.36x = 573,705.84 × 272,689.68 - Step 4: Simplify right side
415,920.36x = 156,443,661,923.73 - Step 5: Solve for x
x = 156,443,661,923.73/415,920.36 - Step 6: Final answer
x = 376,138.50
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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.