Finding the Fourth Proportional to 279,603.21, 385,862.09 and 158,740.48
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Solution
The fourth proportional to 279,603.21, 385,862.09 and 158,740.48 is: 219,067.35
Step by Step Solution
- Step 1: Write the proportion equation
279,603.21 : 385,862.09 = 158,740.48 : x - Step 2: Convert to fraction form
279,603.21/385,862.09 = 158,740.48/x - Step 3: Cross multiply
279,603.21x = 385,862.09 × 158,740.48 - Step 4: Simplify right side
279,603.21x = 61,251,933,380.40 - Step 5: Solve for x
x = 61,251,933,380.40/279,603.21 - Step 6: Final answer
x = 219,067.35
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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.