Finding the Fourth Proportional to 457,261.28, 631,239.36 and 304,553.60
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Solution
The fourth proportional to 457,261.28, 631,239.36 and 304,553.60 is: 420,429.69
Step by Step Solution
- Step 1: Write the proportion equation
457,261.28 : 631,239.36 = 304,553.60 : x - Step 2: Convert to fraction form
457,261.28/631,239.36 = 304,553.60/x - Step 3: Cross multiply
457,261.28x = 631,239.36 × 304,553.60 - Step 4: Simplify right side
457,261.28x = 192,246,219,549.70 - Step 5: Solve for x
x = 192,246,219,549.70/457,261.28 - Step 6: Final answer
x = 420,429.69
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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.