Finding the Fourth Proportional to 378,930.84, 522,924.48 and 209,164.92
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Solution
The fourth proportional to 378,930.84, 522,924.48 and 209,164.92 is: 288,647.55
Step by Step Solution
- Step 1: Write the proportion equation
378,930.84 : 522,924.48 = 209,164.92 : x - Step 2: Convert to fraction form
378,930.84/522,924.48 = 209,164.92/x - Step 3: Cross multiply
378,930.84x = 522,924.48 × 209,164.92 - Step 4: Simplify right side
378,930.84x = 109,377,457,025.24 - Step 5: Solve for x
x = 109,377,457,025.24/378,930.84 - Step 6: Final answer
x = 288,647.55
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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.