Finding the Fourth Proportional to 391,500.36, 540,252.40 and 221,735.68
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Solution
The fourth proportional to 391,500.36, 540,252.40 and 221,735.68 is: 305,984.99
Step by Step Solution
- Step 1: Write the proportion equation
391,500.36 : 540,252.40 = 221,735.68 : x - Step 2: Convert to fraction form
391,500.36/540,252.40 = 221,735.68/x - Step 3: Cross multiply
391,500.36x = 540,252.40 × 221,735.68 - Step 4: Simplify right side
391,500.36x = 119,793,233,285.63 - Step 5: Solve for x
x = 119,793,233,285.63/391,500.36 - Step 6: Final answer
x = 305,984.99
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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.