Finding the Fourth Proportional to 282,991.08, 390,521.18 and 155,663.96
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Solution
The fourth proportional to 282,991.08, 390,521.18 and 155,663.96 is: 214,812.68
Step by Step Solution
- Step 1: Write the proportion equation
282,991.08 : 390,521.18 = 155,663.96 : x - Step 2: Convert to fraction form
282,991.08/390,521.18 = 155,663.96/x - Step 3: Cross multiply
282,991.08x = 390,521.18 × 155,663.96 - Step 4: Simplify right side
282,991.08x = 60,790,073,342.67 - Step 5: Solve for x
x = 60,790,073,342.67/282,991.08 - Step 6: Final answer
x = 214,812.68
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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.