Finding the Fourth Proportional to 232,578,743.34, 320,965,512.18 and 128,163,540.72
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Solution
The fourth proportional to 232,578,743.34, 320,965,512.18 and 128,163,540.72 is: 176,869,458.92
Step by Step Solution
- Step 1: Write the proportion equation
232,578,743.34 : 320,965,512.18 = 128,163,540.72 : x - Step 2: Convert to fraction form
232,578,743.34/320,965,512.18 = 128,163,540.72/x - Step 3: Cross multiply
232,578,743.34x = 320,965,512.18 × 128,163,540.72 - Step 4: Simplify right side
232,578,743.34x = 41,136,076,489,997,088 - Step 5: Solve for x
x = 41,136,076,489,997,088/232,578,743.34 - Step 6: Final answer
x = 176,869,458.92
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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.