Finding the Fourth Proportional to 393,392.36, 542,875.62 and 221,297.32
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Solution
The fourth proportional to 393,392.36, 542,875.62 and 221,297.32 is: 305,387.02
Step by Step Solution
- Step 1: Write the proportion equation
393,392.36 : 542,875.62 = 221,297.32 : x - Step 2: Convert to fraction form
393,392.36/542,875.62 = 221,297.32/x - Step 3: Cross multiply
393,392.36x = 542,875.62 × 221,297.32 - Step 4: Simplify right side
393,392.36x = 120,136,919,799.34 - Step 5: Solve for x
x = 120,136,919,799.34/393,392.36 - Step 6: Final answer
x = 305,387.02
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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.