Finding the Fourth Proportional to 207,991,787.70, 311,987,681.55 and 147,525,611.70
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Solution
The fourth proportional to 207,991,787.70, 311,987,681.55 and 147,525,611.70 is: 221,288,417.55
Step by Step Solution
- Step 1: Write the proportion equation
207,991,787.70 : 311,987,681.55 = 147,525,611.70 : x - Step 2: Convert to fraction form
207,991,787.70/311,987,681.55 = 147,525,611.70/x - Step 3: Cross multiply
207,991,787.70x = 311,987,681.55 × 147,525,611.70 - Step 4: Simplify right side
207,991,787.70x = 46,026,173,563,528,552 - Step 5: Solve for x
x = 46,026,173,563,528,552/207,991,787.70 - Step 6: Final answer
x = 221,288,417.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.