Finding the Fourth Proportional to 378,053,316.33, 521,366,864.43 and 259,148,706.99
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Solution
The fourth proportional to 378,053,316.33, 521,366,864.43 and 259,148,706.99 is: 357,387,550.77
Step by Step Solution
- Step 1: Write the proportion equation
378,053,316.33 : 521,366,864.43 = 259,148,706.99 : x - Step 2: Convert to fraction form
378,053,316.33/521,366,864.43 = 259,148,706.99/x - Step 3: Cross multiply
378,053,316.33x = 521,366,864.43 × 259,148,706.99 - Step 4: Simplify right side
378,053,316.33x = 135,111,548,784,465,136 - Step 5: Solve for x
x = 135,111,548,784,465,136/378,053,316.33 - Step 6: Final answer
x = 357,387,550.77
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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.