Finding the Fourth Proportional to 221,586,753.74, 305,827,691.61 and 128,821,069.98
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Solution
The fourth proportional to 221,586,753.74, 305,827,691.61 and 128,821,069.98 is: 177,795,151.56
Step by Step Solution
- Step 1: Write the proportion equation
221,586,753.74 : 305,827,691.61 = 128,821,069.98 : x - Step 2: Convert to fraction form
221,586,753.74/305,827,691.61 = 128,821,069.98/x - Step 3: Cross multiply
221,586,753.74x = 305,827,691.61 × 128,821,069.98 - Step 4: Simplify right side
221,586,753.74x = 39,397,050,463,196,744 - Step 5: Solve for x
x = 39,397,050,463,196,744/221,586,753.74 - Step 6: Final answer
x = 177,795,151.56
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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.