Finding the Fourth Proportional to 428,264.08, 642,177.41 and 158,378.56
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Solution
The fourth proportional to 428,264.08, 642,177.41 and 158,378.56 is: 237,486.95
Step by Step Solution
- Step 1: Write the proportion equation
428,264.08 : 642,177.41 = 158,378.56 : x - Step 2: Convert to fraction form
428,264.08/642,177.41 = 158,378.56/x - Step 3: Cross multiply
428,264.08x = 642,177.41 × 158,378.56 - Step 4: Simplify right side
428,264.08x = 101,707,130,249.44 - Step 5: Solve for x
x = 101,707,130,249.44/428,264.08 - Step 6: Final answer
x = 237,486.95
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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.