Finding the Fourth Proportional to 397,355.80, 548,554.16 and 306,507.82
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Solution
The fourth proportional to 397,355.80, 548,554.16 and 306,507.82 is: 423,137.50
Step by Step Solution
- Step 1: Write the proportion equation
397,355.80 : 548,554.16 = 306,507.82 : x - Step 2: Convert to fraction form
397,355.80/548,554.16 = 306,507.82/x - Step 3: Cross multiply
397,355.80x = 548,554.16 × 306,507.82 - Step 4: Simplify right side
397,355.80x = 168,136,139,733.53 - Step 5: Solve for x
x = 168,136,139,733.53/397,355.80 - Step 6: Final answer
x = 423,137.50
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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.