Finding the Fourth Proportional to 354,427,939.60, 531,263,995.80 and 135,993,878.80
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Solution
The fourth proportional to 354,427,939.60, 531,263,995.80 and 135,993,878.80 is: 203,845,812.88
Step by Step Solution
- Step 1: Write the proportion equation
354,427,939.60 : 531,263,995.80 = 135,993,878.80 : x - Step 2: Convert to fraction form
354,427,939.60/531,263,995.80 = 135,993,878.80/x - Step 3: Cross multiply
354,427,939.60x = 531,263,995.80 × 135,993,878.80 - Step 4: Simplify right side
354,427,939.60x = 72,248,651,455,628,912 - Step 5: Solve for x
x = 72,248,651,455,628,912/354,427,939.60 - Step 6: Final answer
x = 203,845,812.88
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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.