Finding the Fourth Proportional to 429,059.26, 643,684.56 and 140,883.74
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Solution
The fourth proportional to 429,059.26, 643,684.56 and 140,883.74 is: 211,357.02
Step by Step Solution
- Step 1: Write the proportion equation
429,059.26 : 643,684.56 = 140,883.74 : x - Step 2: Convert to fraction form
429,059.26/643,684.56 = 140,883.74/x - Step 3: Cross multiply
429,059.26x = 643,684.56 × 140,883.74 - Step 4: Simplify right side
429,059.26x = 90,684,688,193.05 - Step 5: Solve for x
x = 90,684,688,193.05/429,059.26 - Step 6: Final answer
x = 211,357.02
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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.