Finding the Fourth Proportional to 282,620.67, 390,012.21 and 155,293.53
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Solution
The fourth proportional to 282,620.67, 390,012.21 and 155,293.53 is: 214,302.70
Step by Step Solution
- Step 1: Write the proportion equation
282,620.67 : 390,012.21 = 155,293.53 : x - Step 2: Convert to fraction form
282,620.67/390,012.21 = 155,293.53/x - Step 3: Cross multiply
282,620.67x = 390,012.21 × 155,293.53 - Step 4: Simplify right side
282,620.67x = 60,566,372,834.00 - Step 5: Solve for x
x = 60,566,372,834.00/282,620.67 - Step 6: Final answer
x = 214,302.70
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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.