Finding the Fourth Proportional to 258,657,345.60, 388,135,317.60 and 97,115,611.20
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Solution
The fourth proportional to 258,657,345.60, 388,135,317.60 and 97,115,611.20 is: 145,729,472.75
Step by Step Solution
- Step 1: Write the proportion equation
258,657,345.60 : 388,135,317.60 = 97,115,611.20 : x - Step 2: Convert to fraction form
258,657,345.60/388,135,317.60 = 97,115,611.20/x - Step 3: Cross multiply
258,657,345.60x = 388,135,317.60 × 97,115,611.20 - Step 4: Simplify right side
258,657,345.60x = 37,693,998,597,030,120 - Step 5: Solve for x
x = 37,693,998,597,030,120/258,657,345.60 - Step 6: Final answer
x = 145,729,472.75
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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.