Finding the Fourth Proportional to 245,494.29, 338,790.33 and 138,085.05
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Solution
The fourth proportional to 245,494.29, 338,790.33 and 138,085.05 is: 190,561.99
Step by Step Solution
- Step 1: Write the proportion equation
245,494.29 : 338,790.33 = 138,085.05 : x - Step 2: Convert to fraction form
245,494.29/338,790.33 = 138,085.05/x - Step 3: Cross multiply
245,494.29x = 338,790.33 × 138,085.05 - Step 4: Simplify right side
245,494.29x = 46,781,879,657.57 - Step 5: Solve for x
x = 46,781,879,657.57/245,494.29 - Step 6: Final answer
x = 190,561.99
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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.