Finding the Fourth Proportional to 282,989.08, 390,518.42 and 155,661.96
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Solution
The fourth proportional to 282,989.08, 390,518.42 and 155,661.96 is: 214,809.92
Step by Step Solution
- Step 1: Write the proportion equation
282,989.08 : 390,518.42 = 155,661.96 : x - Step 2: Convert to fraction form
282,989.08/390,518.42 = 155,661.96/x - Step 3: Cross multiply
282,989.08x = 390,518.42 × 155,661.96 - Step 4: Simplify right side
282,989.08x = 60,788,862,673.30 - Step 5: Solve for x
x = 60,788,862,673.30/282,989.08 - Step 6: Final answer
x = 214,809.92
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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.