Finding the Fourth Proportional to 379,330.84, 523,489.26 and 209,574.28
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Solution
The fourth proportional to 379,330.84, 523,489.26 and 209,574.28 is: 289,219.52
Step by Step Solution
- Step 1: Write the proportion equation
379,330.84 : 523,489.26 = 209,574.28 : x - Step 2: Convert to fraction form
379,330.84/523,489.26 = 209,574.28/x - Step 3: Cross multiply
379,330.84x = 523,489.26 × 209,574.28 - Step 4: Simplify right side
379,330.84x = 109,709,884,752.23 - Step 5: Solve for x
x = 109,709,884,752.23/379,330.84 - Step 6: Final answer
x = 289,219.52
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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.