Finding the Fourth Proportional to 245,900.70, 339,339.62 and 138,472.02
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Solution
The fourth proportional to 245,900.70, 339,339.62 and 138,472.02 is: 191,089.50
Step by Step Solution
- Step 1: Write the proportion equation
245,900.70 : 339,339.62 = 138,472.02 : x - Step 2: Convert to fraction form
245,900.70/339,339.62 = 138,472.02/x - Step 3: Cross multiply
245,900.70x = 339,339.62 × 138,472.02 - Step 4: Simplify right side
245,900.70x = 46,989,042,647.43 - Step 5: Solve for x
x = 46,989,042,647.43/245,900.70 - Step 6: Final answer
x = 191,089.50
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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.