Finding the Fourth Proportional to 455,143.80, 628,077.09 and 261,415.23
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Solution
The fourth proportional to 455,143.80, 628,077.09 and 261,415.23 is: 360,740.75
Step by Step Solution
- Step 1: Write the proportion equation
455,143.80 : 628,077.09 = 261,415.23 : x - Step 2: Convert to fraction form
455,143.80/628,077.09 = 261,415.23/x - Step 3: Cross multiply
455,143.80x = 628,077.09 × 261,415.23 - Step 4: Simplify right side
455,143.80x = 164,188,916,940.08 - Step 5: Solve for x
x = 164,188,916,940.08/455,143.80 - Step 6: Final answer
x = 360,740.75
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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.