Finding the Fourth Proportional to 185,368.71, 278,074.94 and 138,916.83
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Solution
The fourth proportional to 185,368.71, 278,074.94 and 138,916.83 is: 208,391.63
Step by Step Solution
- Step 1: Write the proportion equation
185,368.71 : 278,074.94 = 138,916.83 : x - Step 2: Convert to fraction form
185,368.71/278,074.94 = 138,916.83/x - Step 3: Cross multiply
185,368.71x = 278,074.94 × 138,916.83 - Step 4: Simplify right side
185,368.71x = 38,629,288,472.66 - Step 5: Solve for x
x = 38,629,288,472.66/185,368.71 - Step 6: Final answer
x = 208,391.63
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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.