Finding the Fourth Proportional to 228,313,299.15, 314,989,998.55 and 129,192,991.65
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Solution
The fourth proportional to 228,313,299.15, 314,989,998.55 and 129,192,991.65 is: 178,239,727.62
Step by Step Solution
- Step 1: Write the proportion equation
228,313,299.15 : 314,989,998.55 = 129,192,991.65 : x - Step 2: Convert to fraction form
228,313,299.15/314,989,998.55 = 129,192,991.65/x - Step 3: Cross multiply
228,313,299.15x = 314,989,998.55 × 129,192,991.65 - Step 4: Simplify right side
228,313,299.15x = 40,694,500,252,180,680 - Step 5: Solve for x
x = 40,694,500,252,180,680/228,313,299.15 - Step 6: Final answer
x = 178,239,727.62
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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.