Finding the Fourth Proportional to 275,319,913.80, 412,979,870.70 and 207,295,465.80
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Solution
The fourth proportional to 275,319,913.80, 412,979,870.70 and 207,295,465.80 is: 310,943,198.70
Step by Step Solution
- Step 1: Write the proportion equation
275,319,913.80 : 412,979,870.70 = 207,295,465.80 : x - Step 2: Convert to fraction form
275,319,913.80/412,979,870.70 = 207,295,465.80/x - Step 3: Cross multiply
275,319,913.80x = 412,979,870.70 × 207,295,465.80 - Step 4: Simplify right side
275,319,913.80x = 85,608,854,662,780,272 - Step 5: Solve for x
x = 85,608,854,662,780,272/275,319,913.80 - Step 6: Final answer
x = 310,943,198.70
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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.