Finding the Fourth Proportional to 421,803.12, 582,099.74 and 258,456.80
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Solution
The fourth proportional to 421,803.12, 582,099.74 and 258,456.80 is: 356,677.39
Step by Step Solution
- Step 1: Write the proportion equation
421,803.12 : 582,099.74 = 258,456.80 : x - Step 2: Convert to fraction form
421,803.12/582,099.74 = 258,456.80/x - Step 3: Cross multiply
421,803.12x = 582,099.74 × 258,456.80 - Step 4: Simplify right side
421,803.12x = 150,447,636,081.23 - Step 5: Solve for x
x = 150,447,636,081.23/421,803.12 - Step 6: Final answer
x = 356,677.39
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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.