Finding the Fourth Proportional to 275,465,784.20, 380,128,211.70 and 157,985,043.08
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Solution
The fourth proportional to 275,465,784.20, 380,128,211.70 and 157,985,043.08 is: 218,011,002.98
Step by Step Solution
- Step 1: Write the proportion equation
275,465,784.20 : 380,128,211.70 = 157,985,043.08 : x - Step 2: Convert to fraction form
275,465,784.20/380,128,211.70 = 157,985,043.08/x - Step 3: Cross multiply
275,465,784.20x = 380,128,211.70 × 157,985,043.08 - Step 4: Simplify right side
275,465,784.20x = 60,054,571,901,347,864 - Step 5: Solve for x
x = 60,054,571,901,347,864/275,465,784.20 - Step 6: Final answer
x = 218,011,002.98
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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.