Finding the Fourth Proportional to 208,029,861.60, 312,082,117.20 and 86,873,560.80
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Solution
The fourth proportional to 208,029,861.60, 312,082,117.20 and 86,873,560.80 is: 130,325,928.09
Step by Step Solution
- Step 1: Write the proportion equation
208,029,861.60 : 312,082,117.20 = 86,873,560.80 : x - Step 2: Convert to fraction form
208,029,861.60/312,082,117.20 = 86,873,560.80/x - Step 3: Cross multiply
208,029,861.60x = 312,082,117.20 × 86,873,560.80 - Step 4: Simplify right side
208,029,861.60x = 27,111,684,783,166,924 - Step 5: Solve for x
x = 27,111,684,783,166,924/208,029,861.60 - Step 6: Final answer
x = 130,325,928.09
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1.5x scale
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.