Finding the Fourth Proportional to 409,402.80, 614,104.20 and 143,135.55
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Solution
The fourth proportional to 409,402.80, 614,104.20 and 143,135.55 is: 214,703.33
Step by Step Solution
- Step 1: Write the proportion equation
409,402.80 : 614,104.20 = 143,135.55 : x - Step 2: Convert to fraction form
409,402.80/614,104.20 = 143,135.55/x - Step 3: Cross multiply
409,402.80x = 614,104.20 × 143,135.55 - Step 4: Simplify right side
409,402.80x = 87,900,142,424.31 - Step 5: Solve for x
x = 87,900,142,424.31/409,402.80 - Step 6: Final answer
x = 214,703.33
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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.