Finding the Fourth Proportional to 279,955.13, 420,031.10 and 122,163.08
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Solution
The fourth proportional to 279,955.13, 420,031.10 and 122,163.08 is: 183,287.55
Step by Step Solution
- Step 1: Write the proportion equation
279,955.13 : 420,031.10 = 122,163.08 : x - Step 2: Convert to fraction form
279,955.13/420,031.10 = 122,163.08/x - Step 3: Cross multiply
279,955.13x = 420,031.10 × 122,163.08 - Step 4: Simplify right side
279,955.13x = 51,312,290,160.82 - Step 5: Solve for x
x = 51,312,290,160.82/279,955.13 - Step 6: Final answer
x = 183,287.55
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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.