Finding the Fourth Proportional to 258,987.60, 388,379.28 and 125,828.40
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Solution
The fourth proportional to 258,987.60, 388,379.28 and 125,828.40 is: 188,692.99
Step by Step Solution
- Step 1: Write the proportion equation
258,987.60 : 388,379.28 = 125,828.40 : x - Step 2: Convert to fraction form
258,987.60/388,379.28 = 125,828.40/x - Step 3: Cross multiply
258,987.60x = 388,379.28 × 125,828.40 - Step 4: Simplify right side
258,987.60x = 48,869,143,395.55 - Step 5: Solve for x
x = 48,869,143,395.55/258,987.60 - Step 6: Final answer
x = 188,692.99
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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.