Finding the Fourth Proportional to 400,681.44, 552,939.12 and 221,833.44
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Solution
The fourth proportional to 400,681.44, 552,939.12 and 221,833.44 is: 306,129.45
Step by Step Solution
- Step 1: Write the proportion equation
400,681.44 : 552,939.12 = 221,833.44 : x - Step 2: Convert to fraction form
400,681.44/552,939.12 = 221,833.44/x - Step 3: Cross multiply
400,681.44x = 552,939.12 × 221,833.44 - Step 4: Simplify right side
400,681.44x = 122,660,387,100.17 - Step 5: Solve for x
x = 122,660,387,100.17/400,681.44 - Step 6: Final answer
x = 306,129.45
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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.