Finding the Fourth Proportional to 331,393.49, 457,370.72 and 239,810.13
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Solution
The fourth proportional to 331,393.49, 457,370.72 and 239,810.13 is: 330,972.50
Step by Step Solution
- Step 1: Write the proportion equation
331,393.49 : 457,370.72 = 239,810.13 : x - Step 2: Convert to fraction form
331,393.49/457,370.72 = 239,810.13/x - Step 3: Cross multiply
331,393.49x = 457,370.72 × 239,810.13 - Step 4: Simplify right side
331,393.49x = 109,682,131,521.63 - Step 5: Solve for x
x = 109,682,131,521.63/331,393.49 - Step 6: Final answer
x = 330,972.50
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1.5x scale
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.