Finding the Fourth Proportional to 378,053.36, 521,712.01 and 205,970.79
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Solution
The fourth proportional to 378,053.36, 521,712.01 and 205,970.79 is: 284,238.80
Step by Step Solution
- Step 1: Write the proportion equation
378,053.36 : 521,712.01 = 205,970.79 : x - Step 2: Convert to fraction form
378,053.36/521,712.01 = 205,970.79/x - Step 3: Cross multiply
378,053.36x = 521,712.01 × 205,970.79 - Step 4: Simplify right side
378,053.36x = 107,457,434,852.19 - Step 5: Solve for x
x = 107,457,434,852.19/378,053.36 - Step 6: Final answer
x = 284,238.80
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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.