Finding the Fourth Proportional to 320,417.20, 480,107.40 and 201,876.40
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Solution
The fourth proportional to 320,417.20, 480,107.40 and 201,876.40 is: 302,487.99
Step by Step Solution
- Step 1: Write the proportion equation
320,417.20 : 480,107.40 = 201,876.40 : x - Step 2: Convert to fraction form
320,417.20/480,107.40 = 201,876.40/x - Step 3: Cross multiply
320,417.20x = 480,107.40 × 201,876.40 - Step 4: Simplify right side
320,417.20x = 96,922,353,525.36 - Step 5: Solve for x
x = 96,922,353,525.36/320,417.20 - Step 6: Final answer
x = 302,487.99
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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.