Finding the Fourth Proportional to 312,310.70, 430,988.28 and 169,070.70
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Solution
The fourth proportional to 312,310.70, 430,988.28 and 169,070.70 is: 233,317.30
Step by Step Solution
- Step 1: Write the proportion equation
312,310.70 : 430,988.28 = 169,070.70 : x - Step 2: Convert to fraction form
312,310.70/430,988.28 = 169,070.70/x - Step 3: Cross multiply
312,310.70x = 430,988.28 × 169,070.70 - Step 4: Simplify right side
312,310.70x = 72,867,490,191.40 - Step 5: Solve for x
x = 72,867,490,191.40/312,310.70 - Step 6: Final answer
x = 233,317.30
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1.5x scale
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.