Finding the Fourth Proportional to 208,608,007.80, 312,912,011.70 and 122,387,719.80
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Solution
The fourth proportional to 208,608,007.80, 312,912,011.70 and 122,387,719.80 is: 183,581,579.70
Step by Step Solution
- Step 1: Write the proportion equation
208,608,007.80 : 312,912,011.70 = 122,387,719.80 : x - Step 2: Convert to fraction form
208,608,007.80/312,912,011.70 = 122,387,719.80/x - Step 3: Cross multiply
208,608,007.80x = 312,912,011.70 × 122,387,719.80 - Step 4: Simplify right side
208,608,007.80x = 38,296,587,609,993,920 - Step 5: Solve for x
x = 38,296,587,609,993,920/208,608,007.80 - Step 6: Final answer
x = 183,581,579.70
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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.