Finding the Fourth Proportional to 386,781.94, 533,768.27 and 217,028.62
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Solution
The fourth proportional to 386,781.94, 533,768.27 and 217,028.62 is: 299,504.65
Step by Step Solution
- Step 1: Write the proportion equation
386,781.94 : 533,768.27 = 217,028.62 : x - Step 2: Convert to fraction form
386,781.94/533,768.27 = 217,028.62/x - Step 3: Cross multiply
386,781.94x = 533,768.27 × 217,028.62 - Step 4: Simplify right side
386,781.94x = 115,842,989,432.18 - Step 5: Solve for x
x = 115,842,989,432.18/386,781.94 - Step 6: Final answer
x = 299,504.65
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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.