Finding the Fourth Proportional to 305,700,485.27, 421,855,587.37 and 186,821,961.37
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Solution
The fourth proportional to 305,700,485.27, 421,855,587.37 and 186,821,961.37 is: 257,807,533.99
Step by Step Solution
- Step 1: Write the proportion equation
305,700,485.27 : 421,855,587.37 = 186,821,961.37 : x - Step 2: Convert to fraction form
305,700,485.27/421,855,587.37 = 186,821,961.37/x - Step 3: Cross multiply
305,700,485.27x = 421,855,587.37 × 186,821,961.37 - Step 4: Simplify right side
305,700,485.27x = 78,811,888,246,533,824 - Step 5: Solve for x
x = 78,811,888,246,533,824/305,700,485.27 - Step 6: Final answer
x = 257,807,533.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.