Finding the Fourth Proportional to 282,787.26, 390,246.42 and 155,462.87
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Solution
The fourth proportional to 282,787.26, 390,246.42 and 155,462.87 is: 214,538.75
Step by Step Solution
- Step 1: Write the proportion equation
282,787.26 : 390,246.42 = 155,462.87 : x - Step 2: Convert to fraction form
282,787.26/390,246.42 = 155,462.87/x - Step 3: Cross multiply
282,787.26x = 390,246.42 × 155,462.87 - Step 4: Simplify right side
282,787.26x = 60,668,826,509.19 - Step 5: Solve for x
x = 60,668,826,509.19/282,787.26 - Step 6: Final answer
x = 214,538.75
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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.