Finding the Fourth Proportional to 386,578.62, 533,477.34 and 216,816.48
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Solution
The fourth proportional to 386,578.62, 533,477.34 and 216,816.48 is: 299,206.09
Step by Step Solution
- Step 1: Write the proportion equation
386,578.62 : 533,477.34 = 216,816.48 : x - Step 2: Convert to fraction form
386,578.62/533,477.34 = 216,816.48/x - Step 3: Cross multiply
386,578.62x = 533,477.34 × 216,816.48 - Step 4: Simplify right side
386,578.62x = 115,666,679,018.56 - Step 5: Solve for x
x = 115,666,679,018.56/386,578.62 - Step 6: Final answer
x = 299,206.09
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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.