Finding the Fourth Proportional to 225,763.99, 311,557.32 and 123,789.20
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Solution
The fourth proportional to 225,763.99, 311,557.32 and 123,789.20 is: 170,830.74
Step by Step Solution
- Step 1: Write the proportion equation
225,763.99 : 311,557.32 = 123,789.20 : x - Step 2: Convert to fraction form
225,763.99/311,557.32 = 123,789.20/x - Step 3: Cross multiply
225,763.99x = 311,557.32 × 123,789.20 - Step 4: Simplify right side
225,763.99x = 38,567,429,839.16 - Step 5: Solve for x
x = 38,567,429,839.16/225,763.99 - Step 6: Final answer
x = 170,830.74
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.