Finding the Fourth Proportional to 450,164.55, 621,310.19 and 289,220.79
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Solution
The fourth proportional to 450,164.55, 621,310.19 and 289,220.79 is: 399,178.09
Step by Step Solution
- Step 1: Write the proportion equation
450,164.55 : 621,310.19 = 289,220.79 : x - Step 2: Convert to fraction form
450,164.55/621,310.19 = 289,220.79/x - Step 3: Cross multiply
450,164.55x = 621,310.19 × 289,220.79 - Step 4: Simplify right side
450,164.55x = 179,695,823,986.85 - Step 5: Solve for x
x = 179,695,823,986.85/450,164.55 - Step 6: Final answer
x = 399,178.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.