Finding the Fourth Proportional to 215,887.19, 297,923.74 and 120,393.99
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Solution
The fourth proportional to 215,887.19, 297,923.74 and 120,393.99 is: 166,143.38
Step by Step Solution
- Step 1: Write the proportion equation
215,887.19 : 297,923.74 = 120,393.99 : x - Step 2: Convert to fraction form
215,887.19/297,923.74 = 120,393.99/x - Step 3: Cross multiply
215,887.19x = 297,923.74 × 120,393.99 - Step 4: Simplify right side
215,887.19x = 35,868,227,473.34 - Step 5: Solve for x
x = 35,868,227,473.34/215,887.19 - Step 6: Final answer
x = 166,143.38
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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.