Finding the Fourth Proportional to 265,296.99, 397,889.70 and 85,398.51
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Solution
The fourth proportional to 265,296.99, 397,889.70 and 85,398.51 is: 128,079.80
Step by Step Solution
- Step 1: Write the proportion equation
265,296.99 : 397,889.70 = 85,398.51 : x - Step 2: Convert to fraction form
265,296.99/397,889.70 = 85,398.51/x - Step 3: Cross multiply
265,296.99x = 397,889.70 × 85,398.51 - Step 4: Simplify right side
265,296.99x = 33,979,186,458.06 - Step 5: Solve for x
x = 33,979,186,458.06/265,296.99 - Step 6: Final answer
x = 128,079.80
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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.