Finding the Fourth Proportional to 317,494.20, 438,128.28 and 174,256.68
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Solution
The fourth proportional to 317,494.20, 438,128.28 and 174,256.68 is: 240,466.69
Step by Step Solution
- Step 1: Write the proportion equation
317,494.20 : 438,128.28 = 174,256.68 : x - Step 2: Convert to fraction form
317,494.20/438,128.28 = 174,256.68/x - Step 3: Cross multiply
317,494.20x = 438,128.28 × 174,256.68 - Step 4: Simplify right side
317,494.20x = 76,346,779,486.91 - Step 5: Solve for x
x = 76,346,779,486.91/317,494.20 - Step 6: Final answer
x = 240,466.69
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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.