Finding the Fourth Proportional to 282,742.26, 390,184.74 and 155,418.63
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Solution
The fourth proportional to 282,742.26, 390,184.74 and 155,418.63 is: 214,477.94
Step by Step Solution
- Step 1: Write the proportion equation
282,742.26 : 390,184.74 = 155,418.63 : x - Step 2: Convert to fraction form
282,742.26/390,184.74 = 155,418.63/x - Step 3: Cross multiply
282,742.26x = 390,184.74 × 155,418.63 - Step 4: Simplify right side
282,742.26x = 60,641,977,737.71 - Step 5: Solve for x
x = 60,641,977,737.71/282,742.26 - Step 6: Final answer
x = 214,477.94
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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.