Finding the Fourth Proportional to 378,042.96, 521,700.58 and 208,276.68
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Solution
The fourth proportional to 378,042.96, 521,700.58 and 208,276.68 is: 287,422.53
Step by Step Solution
- Step 1: Write the proportion equation
378,042.96 : 521,700.58 = 208,276.68 : x - Step 2: Convert to fraction form
378,042.96/521,700.58 = 208,276.68/x - Step 3: Cross multiply
378,042.96x = 521,700.58 × 208,276.68 - Step 4: Simplify right side
378,042.96x = 108,658,064,756.47 - Step 5: Solve for x
x = 108,658,064,756.47/378,042.96 - Step 6: Final answer
x = 287,422.53
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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.