Finding the Fourth Proportional to 258,112,161.18, 356,194,833.68 and 140,637,491.42
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Solution
The fourth proportional to 258,112,161.18, 356,194,833.68 and 140,637,491.42 is: 194,079,766.09
Step by Step Solution
- Step 1: Write the proportion equation
258,112,161.18 : 356,194,833.68 = 140,637,491.42 : x - Step 2: Convert to fraction form
258,112,161.18/356,194,833.68 = 140,637,491.42/x - Step 3: Cross multiply
258,112,161.18x = 356,194,833.68 × 140,637,491.42 - Step 4: Simplify right side
258,112,161.18x = 50,094,347,865,519,320 - Step 5: Solve for x
x = 50,094,347,865,519,320/258,112,161.18 - Step 6: Final answer
x = 194,079,766.09
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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.