Finding the Fourth Proportional to 317,628.86, 438,328.58 and 174,398.09
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Solution
The fourth proportional to 317,628.86, 438,328.58 and 174,398.09 is: 240,669.77
Step by Step Solution
- Step 1: Write the proportion equation
317,628.86 : 438,328.58 = 174,398.09 : x - Step 2: Convert to fraction form
317,628.86/438,328.58 = 174,398.09/x - Step 3: Cross multiply
317,628.86x = 438,328.58 × 174,398.09 - Step 4: Simplify right side
317,628.86x = 76,443,664,080.78 - Step 5: Solve for x
x = 76,443,664,080.78/317,628.86 - Step 6: Final answer
x = 240,669.77
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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.