Finding the Fourth Proportional to 309,915,753.96, 427,703,083.20 and 170,686,478.84
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Solution
The fourth proportional to 309,915,753.96, 427,703,083.20 and 170,686,478.84 is: 235,557,993.83
Step by Step Solution
- Step 1: Write the proportion equation
309,915,753.96 : 427,703,083.20 = 170,686,478.84 : x - Step 2: Convert to fraction form
309,915,753.96/427,703,083.20 = 170,686,478.84/x - Step 3: Cross multiply
309,915,753.96x = 427,703,083.20 × 170,686,478.84 - Step 4: Simplify right side
309,915,753.96x = 73,003,133,260,419,552 - Step 5: Solve for x
x = 73,003,133,260,419,552/309,915,753.96 - Step 6: Final answer
x = 235,557,993.83
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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.