Finding the Fourth Proportional to 370,987.12, 511,965.12 and 201,221.20
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Solution
The fourth proportional to 370,987.12, 511,965.12 and 201,221.20 is: 277,686.83
Step by Step Solution
- Step 1: Write the proportion equation
370,987.12 : 511,965.12 = 201,221.20 : x - Step 2: Convert to fraction form
370,987.12/511,965.12 = 201,221.20/x - Step 3: Cross multiply
370,987.12x = 511,965.12 × 201,221.20 - Step 4: Simplify right side
370,987.12x = 103,018,235,804.54 - Step 5: Solve for x
x = 103,018,235,804.54/370,987.12 - Step 6: Final answer
x = 277,686.83
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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.