Finding the Fourth Proportional to 266,477.80, 399,716.70 and 76,937.80
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Solution
The fourth proportional to 266,477.80, 399,716.70 and 76,937.80 is: 115,406.70
Step by Step Solution
- Step 1: Write the proportion equation
266,477.80 : 399,716.70 = 76,937.80 : x - Step 2: Convert to fraction form
266,477.80/399,716.70 = 76,937.80/x - Step 3: Cross multiply
266,477.80x = 399,716.70 × 76,937.80 - Step 4: Simplify right side
266,477.80x = 30,753,323,521.26 - Step 5: Solve for x
x = 30,753,323,521.26/266,477.80 - Step 6: Final answer
x = 115,406.70
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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.