Finding the Fourth Proportional to 386,537.37, 533,420.55 and 216,775.14
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Solution
The fourth proportional to 386,537.37, 533,420.55 and 216,775.14 is: 299,149.12
Step by Step Solution
- Step 1: Write the proportion equation
386,537.37 : 533,420.55 = 216,775.14 : x - Step 2: Convert to fraction form
386,537.37/533,420.55 = 216,775.14/x - Step 3: Cross multiply
386,537.37x = 533,420.55 × 216,775.14 - Step 4: Simplify right side
386,537.37x = 115,632,314,405.13 - Step 5: Solve for x
x = 115,632,314,405.13/386,537.37 - Step 6: Final answer
x = 299,149.12
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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.