Finding the Fourth Proportional to 415,647.84, 623,545.20 and 135,115.68
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Solution
The fourth proportional to 415,647.84, 623,545.20 and 135,115.68 is: 202,697.39
Step by Step Solution
- Step 1: Write the proportion equation
415,647.84 : 623,545.20 = 135,115.68 : x - Step 2: Convert to fraction form
415,647.84/623,545.20 = 135,115.68/x - Step 3: Cross multiply
415,647.84x = 623,545.20 × 135,115.68 - Step 4: Simplify right side
415,647.84x = 84,250,733,708.74 - Step 5: Solve for x
x = 84,250,733,708.74/415,647.84 - Step 6: Final answer
x = 202,697.39
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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.