Finding the Fourth Proportional to 392,902.74, 542,338.52 and 255,269.97
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Solution
The fourth proportional to 392,902.74, 542,338.52 and 255,269.97 is: 352,358.80
Step by Step Solution
- Step 1: Write the proportion equation
392,902.74 : 542,338.52 = 255,269.97 : x - Step 2: Convert to fraction form
392,902.74/542,338.52 = 255,269.97/x - Step 3: Cross multiply
392,902.74x = 542,338.52 × 255,269.97 - Step 4: Simplify right side
392,902.74x = 138,442,735,656.73 - Step 5: Solve for x
x = 138,442,735,656.73/392,902.74 - Step 6: Final answer
x = 352,358.80
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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.