Finding the Fourth Proportional to 168,435,241.20, 252,652,861.80 and 143,776,378.80
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Solution
The fourth proportional to 168,435,241.20, 252,652,861.80 and 143,776,378.80 is: 215,664,568.20
Step by Step Solution
- Step 1: Write the proportion equation
168,435,241.20 : 252,652,861.80 = 143,776,378.80 : x - Step 2: Convert to fraction form
168,435,241.20/252,652,861.80 = 143,776,378.80/x - Step 3: Cross multiply
168,435,241.20x = 252,652,861.80 × 143,776,378.80 - Step 4: Simplify right side
168,435,241.20x = 36,325,513,563,060,856 - Step 5: Solve for x
x = 36,325,513,563,060,856/168,435,241.20 - Step 6: Final answer
x = 215,664,568.20
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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.