Finding the Fourth Proportional to 257,804.28, 386,706.42 and 80,325.63
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Solution
The fourth proportional to 257,804.28, 386,706.42 and 80,325.63 is: 120,488.45
Step by Step Solution
- Step 1: Write the proportion equation
257,804.28 : 386,706.42 = 80,325.63 : x - Step 2: Convert to fraction form
257,804.28/386,706.42 = 80,325.63/x - Step 3: Cross multiply
257,804.28x = 386,706.42 × 80,325.63 - Step 4: Simplify right side
257,804.28x = 31,062,436,811.54 - Step 5: Solve for x
x = 31,062,436,811.54/257,804.28 - Step 6: Final answer
x = 120,488.45
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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.