Finding the Fourth Proportional to 221,735,689.49, 305,997,242.94 and 122,623,148.57
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Solution
The fourth proportional to 221,735,689.49, 305,997,242.94 and 122,623,148.57 is: 169,221,046.32
Step by Step Solution
- Step 1: Write the proportion equation
221,735,689.49 : 305,997,242.94 = 122,623,148.57 : x - Step 2: Convert to fraction form
221,735,689.49/305,997,242.94 = 122,623,148.57/x - Step 3: Cross multiply
221,735,689.49x = 305,997,242.94 × 122,623,148.57 - Step 4: Simplify right side
221,735,689.49x = 37,522,345,381,512,016 - Step 5: Solve for x
x = 37,522,345,381,512,016/221,735,689.49 - Step 6: Final answer
x = 169,221,046.32
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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.