Finding the Fourth Proportional to 257,467.40, 386,204.70 and 79,963.19
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Solution
The fourth proportional to 257,467.40, 386,204.70 and 79,963.19 is: 119,945.90
Step by Step Solution
- Step 1: Write the proportion equation
257,467.40 : 386,204.70 = 79,963.19 : x - Step 2: Convert to fraction form
257,467.40/386,204.70 = 79,963.19/x - Step 3: Cross multiply
257,467.40x = 386,204.70 × 79,963.19 - Step 4: Simplify right side
257,467.40x = 30,882,159,804.99 - Step 5: Solve for x
x = 30,882,159,804.99/257,467.40 - Step 6: Final answer
x = 119,945.90
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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.