Finding the Fourth Proportional to 225,830.20, 311,645.05 and 129,064.08
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Solution
The fourth proportional to 225,830.20, 311,645.05 and 129,064.08 is: 178,108.08
Step by Step Solution
- Step 1: Write the proportion equation
225,830.20 : 311,645.05 = 129,064.08 : x - Step 2: Convert to fraction form
225,830.20/311,645.05 = 129,064.08/x - Step 3: Cross multiply
225,830.20x = 311,645.05 × 129,064.08 - Step 4: Simplify right side
225,830.20x = 40,222,182,510.81 - Step 5: Solve for x
x = 40,222,182,510.81/225,830.20 - Step 6: Final answer
x = 178,108.08
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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.