Finding the Fourth Proportional to 221,418,403.82, 305,557,385.60 and 119,576,071.09
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Solution
The fourth proportional to 221,418,403.82, 305,557,385.60 and 119,576,071.09 is: 165,014,971.80
Step by Step Solution
- Step 1: Write the proportion equation
221,418,403.82 : 305,557,385.60 = 119,576,071.09 : x - Step 2: Convert to fraction form
221,418,403.82/305,557,385.60 = 119,576,071.09/x - Step 3: Cross multiply
221,418,403.82x = 305,557,385.60 × 119,576,071.09 - Step 4: Simplify right side
221,418,403.82x = 36,537,351,660,454,480 - Step 5: Solve for x
x = 36,537,351,660,454,480/221,418,403.82 - Step 6: Final answer
x = 165,014,971.80
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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.