Finding the Fourth Proportional to 307,553.80, 461,330.70 and 85,937.80
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Solution
The fourth proportional to 307,553.80, 461,330.70 and 85,937.80 is: 128,906.70
Step by Step Solution
- Step 1: Write the proportion equation
307,553.80 : 461,330.70 = 85,937.80 : x - Step 2: Convert to fraction form
307,553.80/461,330.70 = 85,937.80/x - Step 3: Cross multiply
307,553.80x = 461,330.70 × 85,937.80 - Step 4: Simplify right side
307,553.80x = 39,645,745,430.46 - Step 5: Solve for x
x = 39,645,745,430.46/307,553.80 - Step 6: Final answer
x = 128,906.70
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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.