Finding the Fourth Proportional to 266,464.80, 399,645.36 and 76,911.84
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Solution
The fourth proportional to 266,464.80, 399,645.36 and 76,911.84 is: 115,352.80
Step by Step Solution
- Step 1: Write the proportion equation
266,464.80 : 399,645.36 = 76,911.84 : x - Step 2: Convert to fraction form
266,464.80/399,645.36 = 76,911.84/x - Step 3: Cross multiply
266,464.80x = 399,645.36 × 76,911.84 - Step 4: Simplify right side
266,464.80x = 30,737,459,985.06 - Step 5: Solve for x
x = 30,737,459,985.06/266,464.80 - Step 6: Final answer
x = 115,352.80
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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.