Finding the Fourth Proportional to 215,619.80, 323,429.70 and 97,347.80
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Solution
The fourth proportional to 215,619.80, 323,429.70 and 97,347.80 is: 146,021.70
Step by Step Solution
- Step 1: Write the proportion equation
215,619.80 : 323,429.70 = 97,347.80 : x - Step 2: Convert to fraction form
215,619.80/323,429.70 = 97,347.80/x - Step 3: Cross multiply
215,619.80x = 323,429.70 × 97,347.80 - Step 4: Simplify right side
215,619.80x = 31,485,169,749.66 - Step 5: Solve for x
x = 31,485,169,749.66/215,619.80 - Step 6: Final answer
x = 146,021.70
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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.