Finding the Fourth Proportional to 310,439.58, 428,511.51 and 201,692.70
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Solution
The fourth proportional to 310,439.58, 428,511.51 and 201,692.70 is: 278,404.07
Step by Step Solution
- Step 1: Write the proportion equation
310,439.58 : 428,511.51 = 201,692.70 : x - Step 2: Convert to fraction form
310,439.58/428,511.51 = 201,692.70/x - Step 3: Cross multiply
310,439.58x = 428,511.51 × 201,692.70 - Step 4: Simplify right side
310,439.58x = 86,427,643,432.98 - Step 5: Solve for x
x = 86,427,643,432.98/310,439.58 - Step 6: Final answer
x = 278,404.07
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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.