Finding the Fourth Proportional to 278,046.74, 383,701.61 and 155,537.53
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Solution
The fourth proportional to 278,046.74, 383,701.61 and 155,537.53 is: 214,640.17
Step by Step Solution
- Step 1: Write the proportion equation
278,046.74 : 383,701.61 = 155,537.53 : x - Step 2: Convert to fraction form
278,046.74/383,701.61 = 155,537.53/x - Step 3: Cross multiply
278,046.74x = 383,701.61 × 155,537.53 - Step 4: Simplify right side
278,046.74x = 59,679,997,980.23 - Step 5: Solve for x
x = 59,679,997,980.23/278,046.74 - Step 6: Final answer
x = 214,640.17
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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.