Finding the Fourth Proportional to 209,422,813.98, 288,999,957.41 and 115,345,721.65
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Solution
The fourth proportional to 209,422,813.98, 288,999,957.41 and 115,345,721.65 is: 159,175,153.88
Step by Step Solution
- Step 1: Write the proportion equation
209,422,813.98 : 288,999,957.41 = 115,345,721.65 : x - Step 2: Convert to fraction form
209,422,813.98/288,999,957.41 = 115,345,721.65/x - Step 3: Cross multiply
209,422,813.98x = 288,999,957.41 × 115,345,721.65 - Step 4: Simplify right side
209,422,813.98x = 33,334,908,642,253,984 - Step 5: Solve for x
x = 33,334,908,642,253,984/209,422,813.98 - Step 6: Final answer
x = 159,175,153.88
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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.