Finding the Fourth Proportional to 310,523.80, 465,785.70 and 258,035.80
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Solution
The fourth proportional to 310,523.80, 465,785.70 and 258,035.80 is: 387,053.70
Step by Step Solution
- Step 1: Write the proportion equation
310,523.80 : 465,785.70 = 258,035.80 : x - Step 2: Convert to fraction form
310,523.80/465,785.70 = 258,035.80/x - Step 3: Cross multiply
310,523.80x = 465,785.70 × 258,035.80 - Step 4: Simplify right side
310,523.80x = 120,189,385,728.06 - Step 5: Solve for x
x = 120,189,385,728.06/310,523.80 - Step 6: Final answer
x = 387,053.70
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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.