Finding the Fourth Proportional to 275,689.80, 413,534.70 and 135,721.80
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Solution
The fourth proportional to 275,689.80, 413,534.70 and 135,721.80 is: 203,582.70
Step by Step Solution
- Step 1: Write the proportion equation
275,689.80 : 413,534.70 = 135,721.80 : x - Step 2: Convert to fraction form
275,689.80/413,534.70 = 135,721.80/x - Step 3: Cross multiply
275,689.80x = 413,534.70 × 135,721.80 - Step 4: Simplify right side
275,689.80x = 56,125,673,846.46 - Step 5: Solve for x
x = 56,125,673,846.46/275,689.80 - Step 6: Final answer
x = 203,582.70
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1.5x scale
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.