Finding the Fourth Proportional to 382,409.12, 527,702.91 and 212,639.60
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Solution
The fourth proportional to 382,409.12, 527,702.91 and 212,639.60 is: 293,430.60
Step by Step Solution
- Step 1: Write the proportion equation
382,409.12 : 527,702.91 = 212,639.60 : x - Step 2: Convert to fraction form
382,409.12/527,702.91 = 212,639.60/x - Step 3: Cross multiply
382,409.12x = 527,702.91 × 212,639.60 - Step 4: Simplify right side
382,409.12x = 112,210,535,701.24 - Step 5: Solve for x
x = 112,210,535,701.24/382,409.12 - Step 6: Final answer
x = 293,430.60
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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.