Finding the Fourth Proportional to 397,974.15, 549,217.80 and 216,693.12
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Solution
The fourth proportional to 397,974.15, 549,217.80 and 216,693.12 is: 299,043.84
Step by Step Solution
- Step 1: Write the proportion equation
397,974.15 : 549,217.80 = 216,693.12 : x - Step 2: Convert to fraction form
397,974.15/549,217.80 = 216,693.12/x - Step 3: Cross multiply
397,974.15x = 549,217.80 × 216,693.12 - Step 4: Simplify right side
397,974.15x = 119,011,718,641.54 - Step 5: Solve for x
x = 119,011,718,641.54/397,974.15 - Step 6: Final answer
x = 299,043.84
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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.