Finding the Fourth Proportional to 258,112,406.30, 387,283,035.27 and 135,261,515.24
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Solution
The fourth proportional to 258,112,406.30, 387,283,035.27 and 135,261,515.24 is: 202,952,236.69
Step by Step Solution
- Step 1: Write the proportion equation
258,112,406.30 : 387,283,035.27 = 135,261,515.24 : x - Step 2: Convert to fraction form
258,112,406.30/387,283,035.27 = 135,261,515.24/x - Step 3: Cross multiply
258,112,406.30x = 387,283,035.27 × 135,261,515.24 - Step 4: Simplify right side
258,112,406.30x = 52,384,490,175,430,152 - Step 5: Solve for x
x = 52,384,490,175,430,152/258,112,406.30 - Step 6: Final answer
x = 202,952,236.69
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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.