Finding the Fourth Proportional to 399,388.80, 598,305.60 and 221,577.60
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Solution
The fourth proportional to 399,388.80, 598,305.60 and 221,577.60 is: 331,934.99
Step by Step Solution
- Step 1: Write the proportion equation
399,388.80 : 598,305.60 = 221,577.60 : x - Step 2: Convert to fraction form
399,388.80/598,305.60 = 221,577.60/x - Step 3: Cross multiply
399,388.80x = 598,305.60 × 221,577.60 - Step 4: Simplify right side
399,388.80x = 132,571,118,914.56 - Step 5: Solve for x
x = 132,571,118,914.56/399,388.80 - Step 6: Final answer
x = 331,934.99
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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.