Finding the Fourth Proportional to 397,978.24, 549,219.82 and 216,700.09
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Solution
The fourth proportional to 397,978.24, 549,219.82 and 216,700.09 is: 299,051.48
Step by Step Solution
- Step 1: Write the proportion equation
397,978.24 : 549,219.82 = 216,700.09 : x - Step 2: Convert to fraction form
397,978.24/549,219.82 = 216,700.09/x - Step 3: Cross multiply
397,978.24x = 549,219.82 × 216,700.09 - Step 4: Simplify right side
397,978.24x = 119,015,980,594.18 - Step 5: Solve for x
x = 119,015,980,594.18/397,978.24 - Step 6: Final answer
x = 299,051.48
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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.