Finding the Fourth Proportional to 312,305.79, 430,985.43 and 169,068.90
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Solution
The fourth proportional to 312,305.79, 430,985.43 and 169,068.90 is: 233,316.94
Step by Step Solution
- Step 1: Write the proportion equation
312,305.79 : 430,985.43 = 169,068.90 : x - Step 2: Convert to fraction form
312,305.79/430,985.43 = 169,068.90/x - Step 3: Cross multiply
312,305.79x = 430,985.43 × 169,068.90 - Step 4: Simplify right side
312,305.79x = 72,866,232,566.13 - Step 5: Solve for x
x = 72,866,232,566.13/312,305.79 - Step 6: Final answer
x = 233,316.94
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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.