Finding the Fourth Proportional to 305,115.80, 457,673.70 and 83,499.80
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Solution
The fourth proportional to 305,115.80, 457,673.70 and 83,499.80 is: 125,249.70
Step by Step Solution
- Step 1: Write the proportion equation
305,115.80 : 457,673.70 = 83,499.80 : x - Step 2: Convert to fraction form
305,115.80/457,673.70 = 83,499.80/x - Step 3: Cross multiply
305,115.80x = 457,673.70 × 83,499.80 - Step 4: Simplify right side
305,115.80x = 38,215,662,415.26 - Step 5: Solve for x
x = 38,215,662,415.26/305,115.80 - Step 6: Final answer
x = 125,249.70
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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.