Finding the Fourth Proportional to 282,814.31, 390,409.56 and 168,130.09
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Solution
The fourth proportional to 282,814.31, 390,409.56 and 168,130.09 is: 232,094.32
Step by Step Solution
- Step 1: Write the proportion equation
282,814.31 : 390,409.56 = 168,130.09 : x - Step 2: Convert to fraction form
282,814.31/390,409.56 = 168,130.09/x - Step 3: Cross multiply
282,814.31x = 390,409.56 × 168,130.09 - Step 4: Simplify right side
282,814.31x = 65,639,594,459.66 - Step 5: Solve for x
x = 65,639,594,459.66/282,814.31 - Step 6: Final answer
x = 232,094.32
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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.