Finding the Fourth Proportional to 418,981.10, 578,194.05 and 227,990.38
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Solution
The fourth proportional to 418,981.10, 578,194.05 and 227,990.38 is: 314,626.80
Step by Step Solution
- Step 1: Write the proportion equation
418,981.10 : 578,194.05 = 227,990.38 : x - Step 2: Convert to fraction form
418,981.10/578,194.05 = 227,990.38/x - Step 3: Cross multiply
418,981.10x = 578,194.05 × 227,990.38 - Step 4: Simplify right side
418,981.10x = 131,822,681,173.24 - Step 5: Solve for x
x = 131,822,681,173.24/418,981.10 - Step 6: Final answer
x = 314,626.80
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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.