Finding the Fourth Proportional to 231,608,643.08, 347,412,964.61 and 78,252,485.18
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Solution
The fourth proportional to 231,608,643.08, 347,412,964.61 and 78,252,485.18 is: 117,378,727.76
Step by Step Solution
- Step 1: Write the proportion equation
231,608,643.08 : 347,412,964.61 = 78,252,485.18 : x - Step 2: Convert to fraction form
231,608,643.08/347,412,964.61 = 78,252,485.18/x - Step 3: Cross multiply
231,608,643.08x = 347,412,964.61 × 78,252,485.18 - Step 4: Simplify right side
231,608,643.08x = 27,185,927,862,942,456 - Step 5: Solve for x
x = 27,185,927,862,942,456/231,608,643.08 - Step 6: Final answer
x = 117,378,727.76
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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.