Finding the Fourth Proportional to 390,283.36, 538,601.68 and 220,514.08
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Solution
The fourth proportional to 390,283.36, 538,601.68 and 220,514.08 is: 304,315.44
Step by Step Solution
- Step 1: Write the proportion equation
390,283.36 : 538,601.68 = 220,514.08 : x - Step 2: Convert to fraction form
390,283.36/538,601.68 = 220,514.08/x - Step 3: Cross multiply
390,283.36x = 538,601.68 × 220,514.08 - Step 4: Simplify right side
390,283.36x = 118,769,253,951.65 - Step 5: Solve for x
x = 118,769,253,951.65/390,283.36 - Step 6: Final answer
x = 304,315.44
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1.5x scale
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.