Finding the Fourth Proportional to 221,364,318.70, 305,479,571.16 and 122,249,260
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Solution
The fourth proportional to 221,364,318.70, 305,479,571.16 and 122,249,260 is: 168,702,217.86
Step by Step Solution
- Step 1: Write the proportion equation
221,364,318.70 : 305,479,571.16 = 122,249,260 : x - Step 2: Convert to fraction form
221,364,318.70/305,479,571.16 = 122,249,260/x - Step 3: Cross multiply
221,364,318.70x = 305,479,571.16 × 122,249,260 - Step 4: Simplify right side
221,364,318.70x = 37,344,651,519,427,344 - Step 5: Solve for x
x = 37,344,651,519,427,344/221,364,318.70 - Step 6: Final answer
x = 168,702,217.86
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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.