Finding the Fourth Proportional to 282,816.47, 390,276.76 and 155,491.09
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Solution
The fourth proportional to 282,816.47, 390,276.76 and 155,491.09 is: 214,572.22
Step by Step Solution
- Step 1: Write the proportion equation
282,816.47 : 390,276.76 = 155,491.09 : x - Step 2: Convert to fraction form
282,816.47/390,276.76 = 155,491.09/x - Step 3: Cross multiply
282,816.47x = 390,276.76 × 155,491.09 - Step 4: Simplify right side
282,816.47x = 60,684,558,814.07 - Step 5: Solve for x
x = 60,684,558,814.07/282,816.47 - Step 6: Final answer
x = 214,572.22
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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.