Finding the Fourth Proportional to 258,049,129.80, 387,073,694.70 and 87,848,041.80
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Solution
The fourth proportional to 258,049,129.80, 387,073,694.70 and 87,848,041.80 is: 131,772,062.70
Step by Step Solution
- Step 1: Write the proportion equation
258,049,129.80 : 387,073,694.70 = 87,848,041.80 : x - Step 2: Convert to fraction form
258,049,129.80/387,073,694.70 = 87,848,041.80/x - Step 3: Cross multiply
258,049,129.80x = 387,073,694.70 × 87,848,041.80 - Step 4: Simplify right side
258,049,129.80x = 34,003,666,111,686,036 - Step 5: Solve for x
x = 34,003,666,111,686,036/258,049,129.80 - Step 6: Final answer
x = 131,772,062.70
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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.