Finding the Fourth Proportional to 220,891,290.73, 304,830,901.93 and 121,769,860.57
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Solution
The fourth proportional to 220,891,290.73, 304,830,901.93 and 121,769,860.57 is: 168,042,915.15
Step by Step Solution
- Step 1: Write the proportion equation
220,891,290.73 : 304,830,901.93 = 121,769,860.57 : x - Step 2: Convert to fraction form
220,891,290.73/304,830,901.93 = 121,769,860.57/x - Step 3: Cross multiply
220,891,290.73x = 304,830,901.93 × 121,769,860.57 - Step 4: Simplify right side
220,891,290.73x = 37,119,216,425,443,440 - Step 5: Solve for x
x = 37,119,216,425,443,440/220,891,290.73 - Step 6: Final answer
x = 168,042,915.15
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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.