Finding the Fourth Proportional to 339,991.70, 509,987.55 and 153,367.70
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Solution
The fourth proportional to 339,991.70, 509,987.55 and 153,367.70 is: 230,051.55
Step by Step Solution
- Step 1: Write the proportion equation
339,991.70 : 509,987.55 = 153,367.70 : x - Step 2: Convert to fraction form
339,991.70/509,987.55 = 153,367.70/x - Step 3: Cross multiply
339,991.70x = 509,987.55 × 153,367.70 - Step 4: Simplify right side
339,991.70x = 78,215,617,572.14 - Step 5: Solve for x
x = 78,215,617,572.14/339,991.70 - Step 6: Final answer
x = 230,051.55
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Similar ratio
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1.5x scale
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.