Finding the Fourth Proportional to 811,330.37, 1,217,064.80 and 212,291.02
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Solution
The fourth proportional to 811,330.37, 1,217,064.80 and 212,291.02 is: 318,454.65
Step by Step Solution
- Step 1: Write the proportion equation
811,330.37 : 1,217,064.80 = 212,291.02 : x - Step 2: Convert to fraction form
811,330.37/1,217,064.80 = 212,291.02/x - Step 3: Cross multiply
811,330.37x = 1,217,064.80 × 212,291.02 - Step 4: Simplify right side
811,330.37x = 258,371,925,286.16 - Step 5: Solve for x
x = 258,371,925,286.16/811,330.37 - Step 6: Final answer
x = 318,454.65
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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.