Finding the Fourth Proportional to 254,089.25, 381,191.37 and 85,604.99
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Solution
The fourth proportional to 254,089.25, 381,191.37 and 85,604.99 is: 128,426.85
Step by Step Solution
- Step 1: Write the proportion equation
254,089.25 : 381,191.37 = 85,604.99 : x - Step 2: Convert to fraction form
254,089.25/381,191.37 = 85,604.99/x - Step 3: Cross multiply
254,089.25x = 381,191.37 × 85,604.99 - Step 4: Simplify right side
254,089.25x = 32,631,882,798.11 - Step 5: Solve for x
x = 32,631,882,798.11/254,089.25 - Step 6: Final answer
x = 128,426.85
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1.5x scale
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.