Finding the Fourth Proportional to 257,714.19, 386,571.29 and 80,239.14
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Solution
The fourth proportional to 257,714.19, 386,571.29 and 80,239.14 is: 120,358.71
Step by Step Solution
- Step 1: Write the proportion equation
257,714.19 : 386,571.29 = 80,239.14 : x - Step 2: Convert to fraction form
257,714.19/386,571.29 = 80,239.14/x - Step 3: Cross multiply
257,714.19x = 386,571.29 × 80,239.14 - Step 4: Simplify right side
257,714.19x = 31,018,147,457.09 - Step 5: Solve for x
x = 31,018,147,457.09/257,714.19 - Step 6: Final answer
x = 120,358.71
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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.