Finding the Fourth Proportional to 287,078.95, 395,758.35 and 201,931.75
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Solution
The fourth proportional to 287,078.95, 395,758.35 and 201,931.75 is: 278,377.00
Step by Step Solution
- Step 1: Write the proportion equation
287,078.95 : 395,758.35 = 201,931.75 : x - Step 2: Convert to fraction form
287,078.95/395,758.35 = 201,931.75/x - Step 3: Cross multiply
287,078.95x = 395,758.35 × 201,931.75 - Step 4: Simplify right side
287,078.95x = 79,916,176,192.61 - Step 5: Solve for x
x = 79,916,176,192.61/287,078.95 - Step 6: Final answer
x = 278,377.00
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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.