Finding the Fourth Proportional to 221,770,614.51, 306,031,072.46 and 121,279,221.09
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Solution
The fourth proportional to 221,770,614.51, 306,031,072.46 and 121,279,221.09 is: 167,358,557.30
Step by Step Solution
- Step 1: Write the proportion equation
221,770,614.51 : 306,031,072.46 = 121,279,221.09 : x - Step 2: Convert to fraction form
221,770,614.51/306,031,072.46 = 121,279,221.09/x - Step 3: Cross multiply
221,770,614.51x = 306,031,072.46 × 121,279,221.09 - Step 4: Simplify right side
221,770,614.51x = 37,115,210,096,679,752 - Step 5: Solve for x
x = 37,115,210,096,679,752/221,770,614.51 - Step 6: Final answer
x = 167,358,557.30
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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.