Finding the Fourth Proportional to 338,408.74, 507,271.36 and 212,137.48
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Solution
The fourth proportional to 338,408.74, 507,271.36 and 212,137.48 is: 317,991.99
Step by Step Solution
- Step 1: Write the proportion equation
338,408.74 : 507,271.36 = 212,137.48 : x - Step 2: Convert to fraction form
338,408.74/507,271.36 = 212,137.48/x - Step 3: Cross multiply
338,408.74x = 507,271.36 × 212,137.48 - Step 4: Simplify right side
338,408.74x = 107,611,268,488.08 - Step 5: Solve for x
x = 107,611,268,488.08/338,408.74 - Step 6: Final answer
x = 317,991.99
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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.