Finding the Fourth Proportional to 278,476.42, 417,152.82 and 128,508.38
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Solution
The fourth proportional to 278,476.42, 417,152.82 and 128,508.38 is: 192,503.31
Step by Step Solution
- Step 1: Write the proportion equation
278,476.42 : 417,152.82 = 128,508.38 : x - Step 2: Convert to fraction form
278,476.42/417,152.82 = 128,508.38/x - Step 3: Cross multiply
278,476.42x = 417,152.82 × 128,508.38 - Step 4: Simplify right side
278,476.42x = 53,607,633,110.63 - Step 5: Solve for x
x = 53,607,633,110.63/278,476.42 - Step 6: Final answer
x = 192,503.31
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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.