Finding the Fourth Proportional to 156,984.20, 235,474.41 and 38,656.70
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Solution
The fourth proportional to 156,984.20, 235,474.41 and 38,656.70 is: 57,984.58
Step by Step Solution
- Step 1: Write the proportion equation
156,984.20 : 235,474.41 = 38,656.70 : x - Step 2: Convert to fraction form
156,984.20/235,474.41 = 38,656.70/x - Step 3: Cross multiply
156,984.20x = 235,474.41 × 38,656.70 - Step 4: Simplify right side
156,984.20x = 9,102,663,625.05 - Step 5: Solve for x
x = 9,102,663,625.05/156,984.20 - Step 6: Final answer
x = 57,984.58
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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.