Finding the Fourth Proportional to 220,891,281.60, 304,830,889.34 and 121,769,851.44
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Solution
The fourth proportional to 220,891,281.60, 304,830,889.34 and 121,769,851.44 is: 168,042,902.55
Step by Step Solution
- Step 1: Write the proportion equation
220,891,281.60 : 304,830,889.34 = 121,769,851.44 : x - Step 2: Convert to fraction form
220,891,281.60/304,830,889.34 = 121,769,851.44/x - Step 3: Cross multiply
220,891,281.60x = 304,830,889.34 × 121,769,851.44 - Step 4: Simplify right side
220,891,281.60x = 37,119,212,108,646,024 - Step 5: Solve for x
x = 37,119,212,108,646,024/220,891,281.60 - Step 6: Final answer
x = 168,042,902.55
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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.