Finding the Fourth Proportional to 258,692,756.80, 388,039,135.20 and 177,063,419.20
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Solution
The fourth proportional to 258,692,756.80, 388,039,135.20 and 177,063,419.20 is: 265,595,128.80
Step by Step Solution
- Step 1: Write the proportion equation
258,692,756.80 : 388,039,135.20 = 177,063,419.20 : x - Step 2: Convert to fraction form
258,692,756.80/388,039,135.20 = 177,063,419.20/x - Step 3: Cross multiply
258,692,756.80x = 388,039,135.20 × 177,063,419.20 - Step 4: Simplify right side
258,692,756.80x = 68,707,536,061,923,072 - Step 5: Solve for x
x = 68,707,536,061,923,072/258,692,756.80 - Step 6: Final answer
x = 265,595,128.80
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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.