Finding the Fourth Proportional to 378,110.96, 521,829.90 and 282,451.58
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Solution
The fourth proportional to 378,110.96, 521,829.90 and 282,451.58 is: 389,810.65
Step by Step Solution
- Step 1: Write the proportion equation
378,110.96 : 521,829.90 = 282,451.58 : x - Step 2: Convert to fraction form
378,110.96/521,829.90 = 282,451.58/x - Step 3: Cross multiply
378,110.96x = 521,829.90 × 282,451.58 - Step 4: Simplify right side
378,110.96x = 147,391,679,746.24 - Step 5: Solve for x
x = 147,391,679,746.24/378,110.96 - Step 6: Final answer
x = 389,810.65
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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.