Finding the Fourth Proportional to 282,817.47, 390,278.14 and 155,492.09
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Solution
The fourth proportional to 282,817.47, 390,278.14 and 155,492.09 is: 214,573.60
Step by Step Solution
- Step 1: Write the proportion equation
282,817.47 : 390,278.14 = 155,492.09 : x - Step 2: Convert to fraction form
282,817.47/390,278.14 = 155,492.09/x - Step 3: Cross multiply
282,817.47x = 390,278.14 × 155,492.09 - Step 4: Simplify right side
282,817.47x = 60,685,163,669.91 - Step 5: Solve for x
x = 60,685,163,669.91/282,817.47 - Step 6: Final answer
x = 214,573.60
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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.