Finding the Fourth Proportional to 282,813.31, 390,408.18 and 168,129.09
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Solution
The fourth proportional to 282,813.31, 390,408.18 and 168,129.09 is: 232,092.94
Step by Step Solution
- Step 1: Write the proportion equation
282,813.31 : 390,408.18 = 168,129.09 : x - Step 2: Convert to fraction form
282,813.31/390,408.18 = 168,129.09/x - Step 3: Cross multiply
282,813.31x = 390,408.18 × 168,129.09 - Step 4: Simplify right side
282,813.31x = 65,638,972,031.96 - Step 5: Solve for x
x = 65,638,972,031.96/282,813.31 - Step 6: Final answer
x = 232,092.94
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1.5x scale
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.